NEET Solved Paper 2016 Question 42

Question: A long solenoid has 1000 turns. When a current of 4A flows through it, the magnetic flux linked with each turn of the solenoid is $ 4\times {10^{-3}},Wb\text{.} $ The self-inductance of the solenoid is :-

Options:

A) 4H

B) 3H

C) 2H

D) 1H

Show Answer

Answer:

Correct Answer: D

Solution:

  • Flux linked with each turn $ =4\times {10^{-3}}Wb $
    $ \therefore $ Total flux linked $ =1000[4\times {10^{-3}}]Wb $ $ o| _{ttotal},=4\Rightarrow Li=4\Rightarrow L=1H $