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Can the instantaneous power output of an ac source ever be negative? Can the average power output be negative?
Alternating Current | CBSE | Class 12 | NCERT Exemplar | Physics
Can the instantaneous power output of an ac source ever be negative? Can the average power output be negative?

a) When P < 0, then AC source’s instantaneous power output can be negative.

b) The average power output cannot be negative as P_{av}>0.

i

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