Physics
Grade-7
Easy
Question
When current is passed through a conductor, the heat produced in it depends upon
I. The material of the conductor
II. The current flowing through the conductor
III. The time for which the current flows
- I and II only
- I and III only
- II and III only
- All I, II, and III
Hint:
All I, II and III
The correct answer is: All I, II, and III
The material of the conductor - better conductors produce less heat.
The current flowing through the conductor - the amount of heat produced in the wire is directly proportional to the square of current passing through the wire.
The time for which the current flows the amount of heat produced in the wire is directly proportional to the time for which current is passed in the wire.
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