A) \[45{}^\circ \]
B) \[60{}^\circ \]
C) \[90{}^\circ \]
D) \[180{}^\circ \]
Correct Answer: C
Solution :
[c] The current in an ac circuit is said to be wattless, if the power loss in the circuit is zero, i.e., \[P=VI\cos \theta =0\] which gives \[\cos \theta =0\]\[\Rightarrow \]\[\theta =90{}^\circ \]You need to login to perform this action.
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