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All questions of Electricity for Class 6 Exam

How is a battery different from an electric cell?
  • a)
    A battery produces AC current, while an electric cell produces DC current
  • b)
    An electric cell is rechargeable, while a battery is not
  • c)
    A battery consists of multiple cells, while an electric cell is single
  • d)
    An electric cell is larger in size compared to a battery
Correct answer is option 'C'. Can you explain this answer?

Ashutosh Verma answered

Battery vs. Electric Cell


A battery and an electric cell are both devices that convert chemical energy into electrical energy. However, there are some key differences between the two.


Difference in Composition

  • A battery consists of multiple cells: A battery is a collection of two or more cells connected in series or parallel. Each cell produces a certain voltage, and when combined in a battery, the total voltage is the sum of the individual cell voltages.
  • An electric cell is a single unit: An electric cell, on the other hand, is a single unit that generates electrical energy through a chemical reaction. It is not made up of multiple cells like a battery.



Functionality

  • Battery: A battery is designed to provide a more extended and consistent source of power by combining multiple cells. It is commonly used in devices that require higher voltage and longer runtime.
  • Electric Cell: An electric cell is typically used in smaller, low-power devices where a single cell is sufficient to power the device.



Rechargeability

  • Battery: Batteries can be rechargeable or non-rechargeable depending on their chemistry. Rechargeable batteries can be reused multiple times by recharging them after they are depleted.
  • Electric Cell: Electric cells are usually non-rechargeable and are disposed of after they have exhausted their energy.



In conclusion, while both batteries and electric cells convert chemical energy into electrical energy, batteries consist of multiple cells and are often rechargeable, whereas electric cells are single units and are typically used in non-rechargeable devices.
Clear all your Class 6 doubts with EduRev

What type of power plant burns coal and contributes to air pollution?
  • a)
    Geothermal power plant
  • b)
    Solar power plant
  • c)
    Hydroelectric power plant
  • d)
    Thermal power plant
Correct answer is option 'D'. Can you explain this answer?

EduRev Class 6 answered
Thermal power plants burn coal to generate electricity, but unfortunately, this process contributes to air pollution. The burning of coal releases various pollutants into the atmosphere, making it a significant environmental concern associated with this method of power generation.

What is the primary function of an electric circuit in relation to operating an appliance?
  • a)
    Disrupt the flow of electricity
  • b)
    Create a spark
  • c)
    Control the current flow
  • d)
    Generate heat
Correct answer is option 'C'. Can you explain this answer?

Eduskill Classes answered
An electric circuit serves the crucial function of controlling the flow of electric current when operating an appliance. By providing a closed loop for the electricity to follow, the circuit ensures that the appliance receives the necessary power in a controlled manner to function properly.

Why is the presence of a resistor important in an electric circuit, particularly when using LEDs?
  • a)
    To increase electric current flow
  • b)
    To decrease electric current flow
  • c)
    To protect the LED from excess current
  • d)
    To prevent electricity from flowing
Correct answer is option 'C'. Can you explain this answer?

Eduskill Classes answered
In an electric circuit, a resistor is crucial for controlling the flow of electric current. Specifically, when using LEDs, a proper resistor is essential to prevent damage from excess current. Without a resistor, the LED may fuse instantly due to the unregulated flow of electricity.

What happens when the chemicals in a cell are completely utilized?
  • a)
    The cell starts producing more electricity
  • b)
    The cell explodes
  • c)
    The cell stops producing electricity
  • d)
    The cell overheats
Correct answer is option 'C'. Can you explain this answer?

EduRev Class 6 answered
When the chemicals in a cell are completely used up, the cell stops producing electricity. This is because the chemical reactions necessary for generating electricity have ceased, resulting in a depletion of the cell's ability to produce a current.

Which part of an electric cell serves as the positive terminal?
  • a)
    The metal disc at the bottom
  • b)
    The negative terminal
  • c)
    The chemical components
  • d)
    The metal cap
Correct answer is option 'D'. Can you explain this answer?

Coachify answered
In an electric cell, the metal cap serves as the positive terminal. It is through this terminal that the current flows out of the cell, while the negative terminal, typically the metal disc at the bottom, allows the current to return to complete the circuit.

In what way do switches contribute to energy conservation in households?
  • a)
    By increasing energy consumption
  • b)
    By decreasing energy efficiency
  • c)
    By allowing appliances to be turned off when not in use
  • d)
    By continuously powering appliances
Correct answer is option 'C'. Can you explain this answer?

Praveen Kumar answered
Switches play a vital role in energy conservation within households by enabling users to turn off appliances when they are not in use. By easily controlling the flow of electricity to devices, switches help prevent unnecessary energy consumption, thereby promoting energy efficiency and reducing electricity bills. Encouraging the habit of switching off appliances when not needed is a simple yet effective way to conserve energy.

Why do Light Emitting Diodes (LEDs) have a longer lifespan compared to traditional bulbs?
  • a)
    LEDs are made of stronger materials.
  • b)
    LEDs have thicker metal strips.
  • c)
    LEDs consume less electricity.
  • d)
    LEDs produce less heat.
Correct answer is option 'D'. Can you explain this answer?

Praveen Kumar answered
LEDs have a longer lifespan compared to traditional bulbs primarily because they produce less heat. The reduced heat generation in LEDs helps to minimize stress on the components, leading to a longer operating life. Additionally, the absence of a filament that can burn out, as seen in traditional bulbs, contributes to the extended durability of LEDs.

Why is a switch considered important in the context of electrical appliances?
  • a)
    To increase energy consumption
  • b)
    To regulate the voltage
  • c)
    To control the flow of electricity
  • d)
    To prevent electricity from flowing
Correct answer is option 'C'. Can you explain this answer?

Coachify answered
A switch is significant in the operation of electrical appliances as it plays a key role in controlling the flow of electricity. By turning the switch on or off, users can effectively manage when the appliance receives power, allowing for convenience, safety, and energy efficiency in usage.

How do power plants typically generate electricity using turbines?
  • a)
    By burning plastic waste
  • b)
    By harnessing wind energy
  • c)
    By converting geothermal heat
  • d)
    By burning coal, using flowing water, or nuclear energy
Correct answer is option 'D'. Can you explain this answer?

Praveen Kumar answered
Power plants generate electricity using turbines by various means such as burning coal, utilizing flowing water, or harnessing nuclear energy. These turbines are crucial components in power generation systems that help convert different forms of energy into electrical energy.

How does the position of a switch affect the operation of an appliance?
  • a)
    The appliance works when the switch is on and doesn't work when the switch is off
  • b)
    The appliance works regardless of the switch position
  • c)
    The appliance works only when the switch is off
  • d)
    The appliance works only when the switch is on
Correct answer is option 'A'. Can you explain this answer?

Coachify answered
The position of a switch directly impacts the operation of an appliance. When the switch is in the 'on' position, the circuit is complete, allowing electricity to flow and the appliance to function. Conversely, when the switch is in the 'off' position, the circuit is broken, halting the flow of electricity and causing the appliance to stop working.

What is the primary function of an electric cell?
  • a)
    To store electrical energy
  • b)
    To produce electric current
  • c)
    To regulate voltage
  • d)
    To emit light
Correct answer is option 'B'. Can you explain this answer?

Shiksha Academy answered
The primary function of an electric cell is to produce electric current by converting chemical energy into electrical energy. This conversion process allows for the flow of electrons, resulting in the generation of electricity.

What purpose does the argon gas serve in an electric bulb?
  • a)
    It helps to conduct electricity efficiently.
  • b)
    It prevents the bulb from overheating.
  • c)
    It protects the tungsten filament from heat.
  • d)
    It enhances the brightness of the light.
Correct answer is option 'C'. Can you explain this answer?

Coachify answered
The argon gas in an electric bulb serves the purpose of protecting the tungsten filament from heat. By surrounding the filament, the argon gas helps to maintain the structural integrity of the filament, preventing it from burning out too quickly. This protection enables the bulb to produce light efficiently and last longer.

How do hydroelectric power plants generate electricity?
  • a)
    By burning fossil fuels
  • b)
    By using solar panels
  • c)
    By flowing water turning turbines
  • d)
    By utilizing geothermal energy
Correct answer is option 'C'. Can you explain this answer?

Eduskill Classes answered
Hydroelectric power plants generate electricity by using the kinetic energy of flowing water to turn turbines. This movement drives the turbines, which in turn generates electrical energy. Hydroelectric power is a renewable energy source that relies on the natural flow of water to produce electricity.

What purpose does a switch serve in an electric circuit?
  • a)
    To generate electricity
  • b)
    To store electricity
  • c)
    To control the flow and direction of electric current
  • d)
    To amplify electricity
Correct answer is option 'C'. Can you explain this answer?

Coachify answered
A switch in an electric circuit serves the purpose of controlling the flow and direction of electric current. By toggling the switch on or off, one can either complete or break the circuit, thereby allowing or stopping the flow of electricity. This control mechanism is essential for powering appliances and devices as needed, enhancing safety and efficiency in electrical systems.

How are electric cables typically positioned to ensure safety and functionality?
  • a)
    Buried underground
  • b)
    Fixed on tall poles
  • c)
    Draped across the ground
  • d)
    Submerged in water
Correct answer is option 'B'. Can you explain this answer?

EduRev Class 6 answered
Electric cables are usually fixed on tall poles to keep them out of reach and ensure safety. This positioning helps to prevent accidental contact and damage while also allowing for efficient transmission of electricity without interference.

What type of materials allow electricity to pass through them?
  • a)
    Metals like copper
  • b)
    Plastics and fiberglass
  • c)
    Ceramics and mica
  • d)
    Wood and rubber
Correct answer is option 'A'. Can you explain this answer?

Praveen Kumar answered
Materials like metals, such as copper, allow electricity to pass through them. This property makes metals like copper ideal for use in electric wires due to their conductivity. Fun Fact: Copper is a widely used material in electrical applications due to its excellent conductivity and corrosion resistance.

Why is understanding electricity crucial in our daily lives?
  • a)
    To enhance knowledge of historical inventions
  • b)
    To appreciate the role of electric cells in nature
  • c)
    To comprehend the functioning of basic appliances
  • d)
    To explore the applications of advanced technologies
Correct answer is option 'C'. Can you explain this answer?

Praveen Kumar answered
Understanding electricity is essential in our daily lives as it allows individuals to comprehend the functioning of basic appliances that we use regularly. From simple electric cells and bulbs to more advanced technologies like LEDs and power plants, a foundational knowledge of electricity enables individuals to operate, troubleshoot, and appreciate the devices that power modern society. This understanding forms the basis for using electricity safely and effectively in various applications.

What characteristic of Light Emitting Diodes (LEDs) allows electricity to flow in only one direction?
  • a)
    The presence of metal strips
  • b)
    The emission of colored light
  • c)
    The consumption of less electricity
  • d)
    The use of a diode
Correct answer is option 'D'. Can you explain this answer?

Eduskill Classes answered
Light Emitting Diodes (LEDs) allow electricity to flow in only one direction due to the presence of a diode. A diode is a semiconductor device that permits the flow of electrical current in one direction while blocking it in the opposite direction. This property ensures that electricity flows through the LED in the intended direction, enabling it to emit light efficiently.

How do Light Emitting Diodes (LEDs) differ from ordinary light bulbs in terms of electricity consumption and heat production?
  • a)
    LEDs consume more electricity and produce more heat.
  • b)
    LEDs consume less electricity and produce more heat.
  • c)
    LEDs consume less electricity and produce less heat.
  • d)
    LEDs consume more electricity and produce less heat.
Correct answer is option 'C'. Can you explain this answer?

Coachify answered
Compared to ordinary light bulbs, LEDs consume less electricity and produce less heat. This efficiency is due to the unique way in which LEDs produce light, resulting in reduced energy waste in the form of heat. As a result, LEDs are not only energy-efficient but also help to maintain a cooler operating temperature, making them a preferred choice for various lighting applications.

Chapter doubts & questions for Electricity - Eureka Plus Class 6: Book Solutions, Notes & Worksheets 2025 is part of Class 6 exam preparation. The chapters have been prepared according to the Class 6 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 6 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.

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