Electromagnetic induction A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is 5000 ohms 100 ohms 500 ohms 1000 ohms 5000 ohms 100 ohms 500 ohms 1000 ohms ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Tend to decrease the amount of current Produce current opposite to the increasing current Aid the applied voltage Aid the increasing current Tend to decrease the amount of current Produce current opposite to the increasing current Aid the applied voltage Aid the increasing 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 Change of number of turns of coil The resistance of magnetic path Variation in voltage to the coil Variation in coil current Change of number of turns of coil The resistance of magnetic path Variation in voltage to the coil Variation in coil current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two coils have inductances of 8 mH and 18 mH and a coefficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be 38 mH 36 mH 30 mH 48 mH 38 mH 36 mH 30 mH 48 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following circuit element stores energy in the electromagnetic field? Resistance Inductance Condenser Variable resistor Resistance Inductance Condenser Variable resistor 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 Lenz Coulomb Newton Faraday Lenz Coulomb Newton Faraday ANSWER DOWNLOAD EXAMIANS APP
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