The self-inductance of a solenoid is increased when a soft iron core is inserted into it. This is because the soft iron core_______________?

Related Mcqs:

The self inductances of two coils are 8 mH and 18 mH. If the co-efficients of coupling is 0.5, the mutual inductance of the coils is______________?

A. 4 mH B. 5 mH C. 6 mH D. 12 mH...

The co-efficient of coupling between two air core coils depends on____________?

A. self-inductance of two coils only B. mutual inductance between two coils only C. mutual inductance and self inductance of two coils D. none of the above...

cmf generated by A.C dynamo depends upon_____________?

A. number of turns in the coil B. magnetic field strength C. frequency of rotation D. all of above...

Inductors acts as a short circuit for_______________?

A. AC B. DC C. Both A and B D. none of these...

A coil of wire is arranged with its plane perpendicular to a uniform magnetic field o flux density B. when the radius of the coil increases from r1 to r2 in time Δt then what is the emf induced in the coil ?

A. ωB/r22-r12/Δt B. ωB(r2-r1)2/Δt C. ωB(r22-r12)/Δt D. ωB(r22+r12)/Δt...