Alternating CurrentEasy
Question
The power factor of an AC circuit having resistance (R) and inductance (L) connected in series and an angular velocity ω is
Options
A.R/ωL
B.R/(R2 + ω2L2)1/2
C.ωL/R
D.R/(R2 - ω2L2)1/2
Solution
cos φ = power factor = R/Z
Impedance of the circuit Z2 = R2 + (ωL)2
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