33.
In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will

35.
The inductance of a coil will increase under all the following conditions except

37.
As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it

38.
The coefficient of coupling between two air core coils depends on

40.
A laminated iron core has reduced eddy-current losses because