Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Produce current opposite to the increasing current Aid the applied voltage Tend to decrease the amount of current Aid the increasing current Produce current opposite to the increasing current Aid the applied voltage Tend to decrease the amount of current Aid the increasing current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be Halved Unaffected Quadrupled Doubled Halved Unaffected Quadrupled Doubled ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be 12 A/s 4 A/s 16 A/s 20 A/s 12 A/s 4 A/s 16 A/s 20 A/s ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A moving magnetic field will produce the same effect as a conductor that is moving. True False True False ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Mutually inductance between two magnetically coupled coils depends on Cross-sectional area of their common core Permeability of the core All of the listed here The number of their turns Cross-sectional area of their common core Permeability of the core All of the listed here The number of their turns ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will 3 mH 24 mH 28 mH 12 mH 3 mH 24 mH 28 mH 12 mH ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS