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 24 mH 12 mH 48 mH 3 mH 24 mH 12 mH 48 mH 3 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is 250 mH 350 mH None of the listed here 3500 mH 250 mH 350 mH None of the listed here 3500 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the fpllowing inductor will have the least eddy current losses ? Iron core Laminated iron core Powdered iron core Air core Iron core Laminated iron core Powdered iron core Air core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Reversing the field or the current will reverse the force on the conductor. Yes No Yes No ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The law that the induced e.m.f. and current always oppose the cause producing them is due to Newton Coulomb Faraday Lenz Newton Coulomb Faraday Lenz 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 20 H 10 H 5 H 15 H 20 H 10 H 5 H 15 H ANSWER DOWNLOAD EXAMIANS APP
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