Electro Magnetic Induction And Alternating Currents Question 67

Question: An inductor of inductance L and resistor of resistance R are joined in series and connected by a source of frequency ω . Power dissipated in the circuit is [AIEEE 2002; RPET 2003]

Options:

A) (R2+ω2L2)V

B) V2R(R2+ω2L2)

C) V(R2+ω2L2)

D) R2+ω2L2V2

Show Answer

Answer:

Correct Answer: B

Solution:

P=Vicosφ=V (VZ) (RZ)=V2RZ2 =V2R(R2+ω2L2)



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