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Power factor is 1/2 in a series RL a.c circuit of frequency 50 Hz. If $R = 100 Ω$ then L in henry is

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detailed solution

Correct option is A

tanϕ=LωR=3 ⇒L=3Rω=3100100 π=3π

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Power factor is 1/2 in a series RL a.c circuit of frequency 50 Hz. If R=100Ω then L in henry is

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Power factor is 1/2 in a series RL a.c circuit of frequency 50 Hz. If $R = 100 Ω$ then L in henry is