In pure inductance, the average power dissipated is:
Correct answer: D. Zero
- A. 1
- B. Greater than 1
- C. Less than 1 but greater than zero
- D. Zero
Explanation
In a purely inductive circuit, the average power dissipated is zero. This is because the current and voltage are 90 degrees out of phase, resulting in a zero product when calculating average power over a complete cycle. The energy stored in the magnetic field is returned to the circuit, so no net power is dissipated.Option A, B, and C are incorrect because they suggest that power is dissipated, which contradicts the nature of pure inductance where energy is conserved and cycled back into the system.
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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