Heat produced when a steady state current, I passes through an electrical conductor having resistance, 'R' is___________________?
Correct answer: B. I2R
- A. IR
- B. I2R
- C. IR2
- D. I2R2
Explanation
The electrical heating rate is given by Joule’s law, P = I²R, where current squared multiplied by resistance gives heat produced per unit time. Thus the applicable expression is I²R.
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