Electro Magnetic Induction And Alternating Currents Question 91

Question: If a current I given by I0sin,(ω,tπ2) flows in an ac circuit across which an ac potential of E=E0sinω,t has been applied, then the power consumption P in the circuit will be [CPMT 1986; Roorkee 1992; SCRA 1996; MP PMT 1994; RPET 2001; MP PET 2001, 02]

Options:

A) P=E0I02

B) P=2E0I0

C) P=E0I02

D) P = 0

Show Answer

Answer:

Correct Answer: D

Solution:

Phase angle φ=90o , so power P=Vicosφ=0



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