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 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 12 mH 24 mH 28 mH 3 mH 12 mH 24 mH 28 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by Variation in coil current The resistance of magnetic path Change of number of turns of coil Variation in voltage to the coil Variation in coil current The resistance of magnetic path Change of number of turns of coil Variation in voltage to the coil ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction An open coil has Infinite resistance and normal inductance Zero resistance and inductance Infinite resistance and zero inductance Zero resistance and high inductance Infinite resistance and normal inductance Zero resistance and inductance Infinite resistance and zero inductance Zero resistance and high inductance ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Aid the increasing current Tend to decrease the amount of current Aid the applied voltage Produce current opposite to the increasing current Aid the increasing current Tend to decrease the amount of current Aid the applied voltage Produce current opposite to the increasing current ANSWER DOWNLOAD EXAMIANS APP
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