Doubt by faizan

When supply is dc then Xl is zero so L becomes zero

Then why emf=Ldi/dt not equal to zero

Please explain sirji

Answers

Answer by Jay Prakash

Bcoz in the hollow region I enclosed is zero so B is zero

Answer by faizan

Sir mera question h ki, jb DC supply hoti h tb 

L= zero ho jata h kya