When two co-axial coils having same current in same direction are bring close to each other then what effect on the value of current in both coils ? and Why?
Flux linked through following coils changes with respect to time then for which coil an emf is not induced
1 copper coil
2. wooden coil
3. iron coil
A solenoid has the self inductance 2H. If length of the solenoid is doubled having turn density and area constant then new self inductance is