Electro Magnetic Induction And Alternating Currents Question 63

Question: The power factor of an ac circuit having resistance (R) and inductance (L) connected in series and an angular velocity ω is [AIEEE 2002; MP PET 2000]

Options:

A) R/ωL

B) R/(R2+ω2L2)1/2

C) ωL/R

D) R/(R2ω2L2)1/2

Show Answer

Answer:

Correct Answer: B

Solution:

cosφ=RZ=R(R2+ωL2)1/2



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