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When the circuit is open the current will

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Important Questions on Electricity and Circuits

MEDIUM

The diagram below shows a dual control switch circuit connected to a bulb. Copy the diagram and complete it so that the bulb is switched ON.

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EASY
Why are metals good conductors of electricity whereas glass is a bad conductor of electricity? Give reason.
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What is a conductor of electricity? Give two examples.

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In the given circuit diagram, identify the objects marked as 1, 2, 3.

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MEDIUM
What are conductors? Give two examples.
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Write the circuit symbol of p-n-p transistor.
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In an electric circuit, current starts from the
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Match the statements in Column A with those in Column B.

Column A Column B
1. The path along which an electric current flows. (a) Electric current                        
2. A device which converts the chemical energy into electrical energy. (b) Insulator                                                                                           
3. A material which does not allow the electric current to pass through it. (c) Cell
4. The energy which flows in an electric circuit. (d) Conductor
5. A material which allows the electric current to flow through it. (e) Electric circuit

 

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Define ‘electric circuit’.
MEDIUM

List the basic conditions required for an electric current to flow. Draw an electric circuit showing basic electric components used.

EASY

Fill in the blank spaces by choosing correct words from the list given below :

List: open circuit, insulator, terminal, circuit, chemicals

A circuit in which electricity does not flow is called an _____.

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An electric _____ is a closed path through which the electric current flows.
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4. When an electric circuit is closed, the electric current stops flowing through it.
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Which direction the current flows in a closed circuit?
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What will happen if the connecting wire of a circuit breaks down, while a device is working?
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When a switch is in the ‘off’ position, the electric circuit is closed.
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The statements given below are incorrect. Write the correct statements.
When an electric circuit is closed, no current flows through it.

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How is an electric bulb connected to a cell?
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Choose the incorrect statement about the series circuit. 
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Electric current flows only if the circuit is _____.