MHT CET202411 May 2024Morning ShiftPhysicsElectromagnetic InductionActual
When the number of turns in a coil is doubled without any change in the length of the coil, its self-inductance
Options
- Abecomes 4 times.
- Bbecomes 2 times.
- Cgets halved.
- Dremains unchanged.
Correct answer
A. becomes 4 times.
Step-by-step solution
Self-inductance of solenoid is, L l = ₀ ~N ^2 ~A where N is the total number of turns. As L N ^2 array ll & L ₂ ~L ₁ = ( N ₂ ~N ₁ )^2=(2)^2 & ~L ₂=4 ~L ₁ array