Electro Magnetic Induction And Alternating Currents Question 494
Question: A wire of fixed lengths is wound on a solenoid of length and radius r. Its self-inductance is found to be L. Now if same wire is wound on a solenoid of length and radius r/2, then the self in- ductance will be -
Options:
A) 2L
B) L
C) 4L
D) 8L
Show Answer
Answer:
Correct Answer: A
Solution:
-
Length of wire=N =constant (=C, suppose) Self-inductance will become 2L.