Physics
Grade-7
Easy
Question
A bulb does not glow when the probes are hanging in the air. Why?
- Air is a bad conductor of electricity.
- Electricity is discharged into the air.
- Air absorbs electricity.
- Air disperses electricity.
Hint:
Air is a bad conductor that doesn't make a bulb glow.
The correct answer is: Air is a bad conductor of electricity.
- A substance requires ions to be used as conductors.
- Air has inert materials that have particles with no charge or free ions.
- So the air is not a good conductor.
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