static

dynamic

induced e.m.f.

none of the above

become half of their former value

become four times of their former value

remain unaffected

become eight times of their former value

tungsten steel

cast iron

high carbon steel

silicon steel

Whenever the flux linking through a coil or a circuit changes, e.m.f. is produced

The direction of dynamically induced e.m.f. can be determined by applying Fleming's right hand-rule

Coefficient of coupling or tightly coupled coils is zero

The coefficient of self inductance is proportional to the square of the number of turns on it

Joule's law

Coulomb's law

Faraday's law

Lenz's law