If/, R and t are the current, resistance and time respectively, then according to Joule's law heat produced will be proportional to_______________?
Correct answer: A. I2Rt
- A. I2Rt
- B. I2Rf
- C. I2R2t
- D. I2R2t*
Explanation
Joule’s law gives heat energy H = I²Rt, where current is squared and resistance and time are first powers. The alternatives with R² or an incorrect time symbol do not match the law.
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