Electro Magnetic Induction And Alternating Currents Question 32

Question: The reactance of a coil when used in the domestic ac power supply (220 volt, 50 cycles) is 100 ohm. The self inductance of the coil is nearly [MP PMT 1996]

Options:

A) 3.2 henry

B) 0.32 henry

C) 2.2 henry

D) 0.22 henry

Show Answer

Answer:

Correct Answer: B

Solution:

Reactance $ =2\pi \nu L\Rightarrow 100\Omega =2\times \frac{22}{7}\times 50\times L $
$ \therefore L=0.32henry $



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