Q.
If power factor is 1/2 in a series RL circuit R=100 Ω. ac mains is used then L is
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a
3π Henry
b
π Henry
c
π3 Henry
d
None of these
answer is A.
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Detailed Solution
cosφ=12⇒φ=60o tan60o=ωLR⇒L=3πH
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