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Olympiad Test: Electricity And Circuits - 2 - Class 6 MCQ


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10 Questions MCQ Test - Olympiad Test: Electricity And Circuits - 2

Olympiad Test: Electricity And Circuits - 2 for Class 6 2024 is part of Class 6 preparation. The Olympiad Test: Electricity And Circuits - 2 questions and answers have been prepared according to the Class 6 exam syllabus.The Olympiad Test: Electricity And Circuits - 2 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Electricity And Circuits - 2 below.
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Olympiad Test: Electricity And Circuits - 2 - Question 1

Direction: To determine whether an object is a conductor or an insulator, you can build a simple circuit with a battery, light bulb, and three pieces of wire.

Q. Touch the free ends of the wire to the object you are testing. If the light bulb lights up, the object is a___________ . If it does not, then the object is an_______________ .

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 1

The objects that are conductors will allow the flow of electricity through them. The insulators will not allow the flow of current through them. All metals are good conductors of electricity.  

Here, the conductors are Penny, Nickel, Key, Paper clip and Brass paper fastener as these are made of metals. The insulators are Rubber band, Tooth pick and Glass microscope slide.

Olympiad Test: Electricity And Circuits - 2 - Question 2

Which part of the bulb is an insulator?

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 2

'M' part of the bulb is made with insulator. 

Because M is the glass cover, N is the filament, Q is the supporting wires, while R is the positive terminal of the bulb.

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Olympiad Test: Electricity And Circuits - 2 - Question 3

The instrument that can measure current is called a/an:

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 3

- The correct answer is B: Ammeter.
- An ammeter is specifically designed to measure electric current in a circuit.
- It is connected in series with the circuit so that the entire current flows through the ammeter.
- This allows the ammeter to accurately measure the flow of charge in amperes.
- Other options, like a tester or resistor, do not measure current.
- A voltameter is not a standard term in measuring circuits.

Olympiad Test: Electricity And Circuits - 2 - Question 4

The path of electricity is called:

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 4
  • A circuit is the closed loop or path through which electricity flows.
  • An orbit refers to the path of celestial bodies.
  • A filament is the thin wire inside a light bulb that heats up and produces light when electricity passes through it.
  • Current refers to the flow of electricity, but not the path it takes.

So, the correct answer is D: Circuit.

Olympiad Test: Electricity And Circuits - 2 - Question 5

Sanchit’s mother warned him to avoid contact with electrical appliances or even electrical outlets when his hands are wet. Because wet hands cause .

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 5

When your hands are wet, the water reduces the resistance of your skin, making it easier for electrical current to flow through your body. Wet skin provides less resistance compared to dry skin, increasing the risk of electric shock. Therefore, Sanchit's mother warned him to avoid contact with electrical appliances when his hands are wet to reduce the chances of electrical injury.

So, the correct answer is D: Your resistance to be lower.

Olympiad Test: Electricity And Circuits - 2 - Question 6

Identify the A and B from the following diagram:

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 6

In the given diagram, the components A and B are identified as follows:

  • A: This is the part of the circuit that acts as a switch. It allows you to open or close the circuit. When it is in the closed position, electricity flows through the circuit, lighting up the bulb. When it is open, the circuit is incomplete, and the bulb does not light up.
  • B: This is the battery, which provides the electrical energy needed for the circuit. It has a positive (+) and negative (−) terminal, indicating the direction of current flow.

Correct Answer: D

  • A = Switch
  • B = Battery
Olympiad Test: Electricity And Circuits - 2 - Question 7

This wire is the filament of the bulb which becomes red hot and glows when the current is switched on. It is made of a metal called .

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 7

The filament of a bulb is made of tungsten because it has a high melting point and can withstand the high temperatures generated when the current passes through it, allowing it to glow red hot and emit light.

Olympiad Test: Electricity And Circuits - 2 - Question 8

Combination of two or more cells is called a .

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 8

A battery is formed when two or more cells are connected together, typically in series or parallel, to provide electrical energy. The combination increases the voltage or current, depending on how the cells are connected.

  • Circuit refers to the complete path for the flow of electricity.
  • Switch is a device used to control the flow of electricity in a circuit.
  • None of these is incorrect since the correct answer is "Battery."
Olympiad Test: Electricity And Circuits - 2 - Question 9

The following diagram shows identical lamps X and Y connected in series with a battery. The lamps light with normal brightness. A third lamp Z is connected in parallel lamp X.

Q. What happens to the brightness of lamp Y?

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 9

Lamps X and Y are connected in series with a battery. If a third identical lamp Z is connected in parallel with X, then resistance of whole circuit reduces. Due to this, current drawn from battery will increase and bulb Y will be brighter than normal.

Olympiad Test: Electricity And Circuits - 2 - Question 10

If we touch a naked current-carrying wire, we get a shock. This is because our body is a:

Detailed Solution for Olympiad Test: Electricity And Circuits - 2 - Question 10

Our body is a conductor of electricity because it contains water and salts, which allow electric current to pass through. When we touch a naked current-carrying wire, electricity flows through our body to the ground, potentially causing an electric shock.

  • A (Source of electricity): This is incorrect because the body does not produce electricity in this context.
  • C (Insulator of electricity): This is incorrect because insulators resist the flow of electricity, and the human body does not act as an insulator.
  • D (A and B both): This is incorrect because the body is not a source of electricity in this scenario.
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