Electricity and Circuits Test

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Electricity and Circuits Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is false about an electric cell?

A
It converts chemical energy into electrical energy.

B
It has a neutral terminal.

C
It has a positive terminal.

D
It has a negative terminal.

Solution

A cell converts chemical energy into electrical energy and has positive and negative terminals.
Question 2
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In a simple voltaic cell, the negative electrode is made of

A
zinc

B
copper

C
carbon

D
silver

Solution

In a voltaic cell, the zinc terminal is a negative terminal and the copper terminal is a positive terminal.
Question 3
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Choose the incorrect statement among the following.

A
A switch is the source of electric current in a circuit.

B
A switch helps to complete or break the circuit.

C
A switch allows us to use electricity as per our requirement.

D
When the switch is open, there is an air gap between the terminals.

Solution

A switch is a circuit element which is used to break or complete the circuit for the required time. When the switch is open, there is an air gap between the two terminals of the switch. It is not a source of energy.
Question 4
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What will happen if you join the two terminals of a cell without connecting them through a switch or bulb?

A
The electric cell will burn due to a large amount of current.

B
The chemical in the electric cell will get used up very fast.

C
The electric cell will get corroded due to flow of a large amount of current.

D
All of the above

Solution

When the two terminals of a cell are joined without connecting them through a switch or bulb, the chemical in the electric cell will get used up very fast.
Question 5
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What will happen when an extra bulb is inserted in a circuit?

A
The brightness of the first bulb will not change.

B
The brightness of the first bulb will decrease.

C
None of the bulbs will glow.

D
The first bulb will glow dimly, while the newly inserted bulb will glow brightly.

Solution

The brightness of the first bulb will decrease if we add another bulb along with the given bulb because it will also consume the electrical energy.
Question 6
1 / -0

The handles of the tools like pliers, used by electricians for repair work, usually have plastic covers over them. What is the reason?

A
Because plastic is hard

B
Because plastic is an insulator

C
Because plastic is a conductor

D
Because plastic is lightweight

Solution

The handles of the tools like pliers, used by electricians for repair work, usually have plastic covers over them because plastic is a good insulator and it prevents them from electrocution.

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Re-Attempt Weekly Quiz Competition

Electricity and Circuits Test - 1

Result

Electricity and Circuits Test - 1

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SHARING IS CARING

Question 1

It converts chemical energy into electrical energy.

It has a neutral terminal.

It has a positive terminal.

It has a negative terminal.

Solution

Question 2

zinc

copper

carbon

silver

Solution

Question 3

A switch is the source of electric current in a circuit.

A switch helps to complete or break the circuit.

A switch allows us to use electricity as per our requirement.

When the switch is open, there is an air gap between the terminals.

Solution

Question 4

The electric cell will burn due to a large amount of current.

The chemical in the electric cell will get used up very fast.

The electric cell will get corroded due to flow of a large amount of current.

All of the above

Solution

Question 5

The brightness of the first bulb will not change.

The brightness of the first bulb will decrease.

None of the bulbs will glow.

The first bulb will glow dimly, while the newly inserted bulb will glow brightly.

Solution

Question 6

Because plastic is hard

Because plastic is an insulator

Because plastic is a conductor

Because plastic is lightweight

Solution

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