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Class 6 Exam  >  Class 6 Tests  >  Test: Electricity - Class 6 MCQ

Test: Electricity - Class 6 MCQ


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20 Questions MCQ Test - Test: Electricity

Test: Electricity for Class 6 2024 is part of Class 6 preparation. The Test: Electricity questions and answers have been prepared according to the Class 6 exam syllabus.The Test: Electricity MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electricity below.
Solutions of Test: Electricity questions in English are available as part of our course for Class 6 & Test: Electricity solutions in Hindi for Class 6 course. Download more important topics, notes, lectures and mock test series for Class 6 Exam by signing up for free. Attempt Test: Electricity | 20 questions in 10 minutes | Mock test for Class 6 preparation | Free important questions MCQ to study for Class 6 Exam | Download free PDF with solutions
Test: Electricity - Question 1
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What is the primary function of an electric cell?

Detailed Solution for Test: Electricity - Question 1
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.
Test: Electricity - Question 2
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What happens when the chemicals in a cell are completely utilized?

Detailed Solution for Test: Electricity - Question 2
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.
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Test: Electricity - Question 3
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How is a battery different from an electric cell?

Detailed Solution for Test: Electricity - Question 3
One key difference between a battery and an electric cell is that a battery is composed of multiple cells, whereas an electric cell is a single unit. The combination of multiple cells in a battery allows for increased voltage and capacity compared to a single electric cell.
Test: Electricity - Question 4
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Which part of an electric cell serves as the positive terminal?
Detailed Solution for Test: Electricity - Question 4
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.
Test: Electricity - Question 5
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What purpose does the argon gas serve in an electric bulb?
Detailed Solution for Test: Electricity - Question 5
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.
Test: Electricity - Question 6
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How do Light Emitting Diodes (LEDs) differ from ordinary light bulbs in terms of electricity consumption and heat production?
Detailed Solution for Test: Electricity - Question 6
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.
Test: Electricity - Question 7
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What characteristic of Light Emitting Diodes (LEDs) allows electricity to flow in only one direction?
Detailed Solution for Test: Electricity - Question 7
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.
Test: Electricity - Question 8
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What type of materials allow electricity to pass through them?
Detailed Solution for Test: Electricity - Question 8
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.
Test: Electricity - Question 9
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Why do Light Emitting Diodes (LEDs) have a longer lifespan compared to traditional bulbs?
Detailed Solution for Test: Electricity - Question 9
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.
Test: Electricity - Question 10
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How do power plants typically generate electricity using turbines?
Detailed Solution for Test: Electricity - Question 10
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.
Test: Electricity - Question 11
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What type of power plant burns coal and contributes to air pollution?
Detailed Solution for Test: Electricity - Question 11
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.
Test: Electricity - Question 12
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How are electric cables typically positioned to ensure safety and functionality?
Detailed Solution for Test: Electricity - Question 12
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.
Test: Electricity - Question 13
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Why is the presence of a resistor important in an electric circuit, particularly when using LEDs?
Detailed Solution for Test: Electricity - Question 13
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.
Test: Electricity - Question 14
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How do hydroelectric power plants generate electricity?
Detailed Solution for Test: Electricity - Question 14
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.
Test: Electricity - Question 15
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What is the primary function of an electric circuit in relation to operating an appliance?
Detailed Solution for Test: Electricity - Question 15
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.
Test: Electricity - Question 16
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Why is a switch considered important in the context of electrical appliances?
Detailed Solution for Test: Electricity - Question 16
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.
Test: Electricity - Question 17
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What purpose does a switch serve in an electric circuit?
Detailed Solution for Test: Electricity - Question 17
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.
Test: Electricity - Question 18
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How does the position of a switch affect the operation of an appliance?
Detailed Solution for Test: Electricity - Question 18
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.
Test: Electricity - Question 19
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In what way do switches contribute to energy conservation in households?
Detailed Solution for Test: Electricity - Question 19
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.
Test: Electricity - Question 20
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Why is understanding electricity crucial in our daily lives?
Detailed Solution for Test: Electricity - Question 20

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.

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