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Question

Paheli is running short of connecting wires. To complete an electric circuit, she may use a


A

glass bangle

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B

thick thread

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C

rubber pipe

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D

steel spoon

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Solution

The correct option is D

steel spoon


Explanation of the correct answer.

In case of option D

  1. A steel spoon is a metallic object. Only metals conduct electricity and hence they are known as conductors.
  2. We should use a conductor to complete an electric circuit and to keep electricity flowing throughout the circuit.

Explanation of the incorrect answer.

In case of option A

  1. Electricity cannot pass through glass because it is an insulator.
  2. We should use a conductor to complete an electric circuit and to keep the current flowing throughout the circuit.
  3. Therefore if we'll use glass then it will not allow the current to flow.

In case of option B

  1. Electricity cannot pass through the thick thread because it is an insulator.
  2. Therefore if we'll use thick thread then it will not allow the current to flow.

In case of option C

  1. Electricity cannot pass through a rubber pipe because it is an insulator.
  2. Therefore if we'll use a rubber pipe then it will not allow the current to flow.

Hence, option (d) is the correct answer.


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