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 If current in a conductor increases then according to Lenz's law self-induced voltage will Aid the increasing current Aid the applied voltage Produce current opposite to the increasing current Tend to decrease the amount of current Aid the increasing current Aid the applied voltage Produce current opposite to the increasing current Tend to decrease the amount of current 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 voltage to the coil Change of number of turns of coil Variation in coil current The resistance of magnetic path Variation in voltage to the coil Change of number of turns of coil Variation in coil current The resistance of magnetic path ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In case of an inductance, current is proportional to Voltage across the inductance Both of the listed here Magnetic field None of the listed here Voltage across the inductance Both of the listed here Magnetic field None of the listed here 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 20 A/s 16 A/s 12 A/s 4 A/s 20 A/s 16 A/s 12 A/s ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is 6 mH 36 mH 12 mH 18 mH 6 mH 36 mH 12 mH 18 mH ANSWER DOWNLOAD EXAMIANS APP
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