Question
What variables increase or decrease the heating effect of electric current?
✓
Answer
The heating effect of electric current depends on the nature of the metal used as a conductor. Nichrome produces more heat than copper. When the length of the wire in the circuit is increased, the heating effect increases. Also, the wires are kept thin to produce more heat. The amount of heat produced by the electric current flowing through the conductors also depends on the magnitude of the electric current and the duration of time for which the current is passed. A battery of two or more cells produces more heat when current is passed through a nichrome wire compared with a single cell. Also, the wire will be heated more if an electric current is passed for 1 minute compared to the passage of current for 30 seconds.
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