Electricity: Circuits and their Components Class 7 MCQ

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Your test contains multiple-choice questions with only one answer-type question. There are a total of 10 questions

This is a 20 min test. Please make sure you complete it in the stipulated time
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1. What will happen if you join the two terminals of a cell without connecting them through a switch or a bulb?

There will be no impact to cell

The chemicals in the electric cell get used up slowly and cell will produce electricity longer

The chemicals in the electric cell get used up very fast and the cell will no longer produce electric current. It will stop working.

None of these

2. A simple device that is used to either break or complete the electric circuit?

Switch

Terminal

Current

Conductor

3. Materials that do not allow electric current to pass through them ?

Insulators

Conductors

Switch

Battery

4. Materials which allow current to pass through them easily are called?

Insulators

Conductors

Switch

Battery

5. Which one of the following statement is false?

Eraser is a bad conductor of electricity.

Metals are good conductor of electricity.

Our body is a good conductor of electricity.

Plastic is a good conductor of electricity.

6. Which of the following statements is correct of a switch?

It allows the flow of electricity.

It controls the brightness of a bulb.

It controls the power of the batteries.

It fuses a bulb.

7. Which of the following precautions need not be taken while using electric gadgets/appliances/circuit?

We should never touch a lighted electric bulb connected to the mains.

We should never experiment with the electric supply from the mains or a generator or an inverter.

We should never use just any wire or strip of metal in place of a fuse.

We should never turn the switch in ON position.

8. Which one of the following will allow electric current to pass through?

Eraser

Matchstick

Plastic comb

Iron Nail

9. What is false of electric cell?

Chemical energy is converted into electrical energy

It has a neutral terminal

It has a Positive Terminal

It has a Negative Terminal

10. which is false of LED ?

An LED has two terminals, one is positive (attached to a longer wire) and the other is negative (the shorter wire)

Electric current can pass through LED in one direction only

An LED lights up only when its positive terminal (longer wire) connects to the positive terminal of the battery and its negative terminal (shorter wire) connects to the negative terminal of the battery

None of the above

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