Current Electricity

Question: The heat developed in an electric wire of resistance R by a current I for a time t is

1) $\frac{{{I^2}Rt}}{{4.2}}cal$

2) $\frac{{{I^2}t}}{{4.2R}}cal$

3) $\frac{{{I^2}R}}{{4.2\,t}}cal$

4) $\frac{{Rt}}{{4.2\,{I^2}}}cal$

Solution:

Explanation: No Explanation

Heating Effect of Current Electric Power

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