Electromagnetic induction A conductor 2 meters long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be 15 V 25 V 12 V 10 V 15 V 25 V 12 V 10 V ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is 15 H 20 H 5 H 10 H 15 H 20 H 5 H 10 H ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Reversing the field or the current will reverse the force on the conductor. No Yes No Yes 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 Unaffected Doubled Quadrupled Halved Unaffected Doubled Quadrupled Halved 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 4 A/s 12 A/s 20 A/s 16 A/s 4 A/s 12 A/s 20 A/s 16 A/s ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The direction of induced e.m.f. can be found by Kirchhoff s voltage law Laplace's law Fleming's right hand rule Lenz's law Kirchhoff s voltage law Laplace's law Fleming's right hand rule Lenz's law ANSWER DOWNLOAD EXAMIANS APP
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