3) On doubling the supply frequency, the eddy current will :

become half of their former value

become four times of their former value

remain unaffected

become eight times of their former value

Answer is:

become four times of their former value

tungsten steel

cast iron

high carbon steel

silicon steel

Answer is:

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

Answer is:

Joule's law

Coulomb's law

Faraday's law

Lenz's law

Answer is:

Lenz

Faraday

Maxwell

Ohm

Answer is: