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 The resistance of magnetic path Variation in coil current Change of number of turns of coil Variation in voltage to the coil The resistance of magnetic path Variation in coil current Change of number of turns of coil ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Increasing the field or increasing the current will decrease the force on the conductor. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla 100 N 400 N 300 N 1000 N 100 N 400 N 300 N 1000 N ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be 12 H 10 H 6 H 9 H 12 H 10 H 6 H 9 H ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction For a purely inductive circuit which of the following is true? Relative power is zero Apparent power is zero Actual power of the circuit is zero Any capacitance even if present in the circuit will not be charged Relative power is zero Apparent power is zero Actual power of the circuit is zero Any capacitance even if present in the circuit will not be charged ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following circuit element stores energy in the electromagnetic field? Condenser Resistance Variable resistor Inductance Condenser Resistance Variable resistor Inductance ANSWER DOWNLOAD EXAMIANS APP
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