Electro Magnetic Induction And Alternating Currents Question 23

Question: A 120 volt ac source is connected across a pure inductor of inductance 0.70 henry. If the frequency of the source is 60 Hz, the current passing through the inductor is [MP PET 1994]

Options:

A) 4.55 amps

B) 0.355 amps

C) 0.455 amps

D) 3.55 amps

Show Answer

Answer:

Correct Answer: C

Solution:

$ Z=X_{L}=2\pi \times 60\times 0.7 $
$ \therefore i=\frac{120}{Z}=\frac{120}{2\pi \times 60\times 0.7}=0.455ampere $



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