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 $
