science
Grade6
Easy
Question
Which of the following materials cannot be used in place of the cardboard piece in the switch given below?
- A piece of thermocol
- A piece of wood
- A steel bar
- A piece of rubber
Hint:
Steel bar is a good conductor.
The correct answer is: A steel bar
- A steel bar cannot be used in the place of cardboard in the above figure.
- Steel is a good conductor of electricity because of which, when the switch will be closed and current starts to pass through it, current can pass from the switch to the base that is made up of steel.
- As a result, this can disrupt the experiment, and higher the chances of getting an electric shock.
- Thus, it is important for the base on which the experiment is conducted to be a good insulator of electricity.
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