Electromagnetic induction Lenz's law is a consequence of the law of conservation of Charge Induced e.m.f. Energy Induced current Charge Induced e.m.f. Energy Induced current 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 be 12 mH 3 mH 24 mH 48 mH 12 mH 3 mH 24 mH 48 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Higher the self-inductance of a coil, Longer the delay in establishing steady current through it Lesser its weber-turns Lower the e.m.f. induced Greater the flux produced by it Longer the delay in establishing steady current through it Lesser its weber-turns Lower the e.m.f. induced Greater the flux produced by it ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The coefficient of coupling between two air core coils depends on None of the listed here Mutual inductance between two coils only Mutual inductance and self inductance of two coils Self-inductance of two coils only None of the listed here Mutual inductance between two coils only Mutual inductance and self inductance of two coils Self-inductance of two coils only 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 16 A/s 4 A/s 20 A/s 12 A/s 16 A/s 4 A/s 20 A/s ANSWER DOWNLOAD EXAMIANS APP
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 25 V 10 V 12 V 15 V 25 V 10 V 12 V 15 V ANSWER DOWNLOAD EXAMIANS APP
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