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A current i1 = i0 sin omegat passes thro...

A current `i_1 = i_0 sin omegat` passes through a resistor of resistance `R`. How much thermal energy is produced in one time period? A current `i_2 = -i_0 sin omegat` passes through the resistor. How much thermal energy is produced in one time period? If `i_1 and i_2` both pass through the resistor simultaneously, how much thermal energy is produced? Is the principle of superposition obeyed in this case?

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