A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to_________?
Correct answer: D. the statement given is false
- A. the big size of the inductor
- B. the reactance of the inductor
- C. the current flowing in the inductor
- D. the statement given is false
Explanation
An ideal pure inductor has zero average real power because voltage and current differ by 90°, so energy is returned to the source each cycle. A 100 W consumption would imply winding or core losses, contradicting the phrase pure inductance.
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