Question 221Electricity/Electronics - QMED70% to pass
How is the power dissipated as heat in a direct current circuit calculated?
AI Explanation
The correct answer is C) I squared times R.
The power dissipated as heat in a direct current (DC) circuit is calculated using the formula P = I^2 * R, where P is the power, I is the current, and R is the resistance. This formula is derived from Ohm's law and the definition of power, and it is the correct way to calculate the power dissipated as heat in a DC circuit.
The other options are incorrect because:
A) E divided by I would calculate the voltage, not the power.
B) I times R divided by T would calculate the energy, not the power.
D) P divided by R would not correctly calculate the power dissipated as heat.
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