Electro Magnetic Induction And Alternating Currents Question 563
Question: When the number of turns and the length of the solenoid are doubled keeping the area of cross-section same, the inductance [CBSE PMT 1993; MH CET 2000]
Options:
A) Remains the same
B) Is halved
C) Is doubled
D) Becomes four times
Show Answer
Answer:
Correct Answer: C
Solution:
$ L={\mu_{0}}\frac{N^{2}}{l}A $ . When N and l are doubled. L is also doubled.
