Electromagnetic induction In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be 0.5 2.5 2.0 1.0 0.5 2.5 2.0 1.0 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 be 12 mH 48 mH 24 mH 3 mH 12 mH 48 mH 24 mH 3 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be Halved Quadrupled Doubled Unaffected Halved Quadrupled Doubled Unaffected ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage? None of the listed here 0.2 s 0.1 s 0.5 s None of the listed here 0.2 s 0.1 s 0.5 s ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as Self-inductance Series aiding inductance Capacitance Mutual inductance Self-inductance Series aiding inductance Capacitance Mutual inductance 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 20 A/s 16 A/s 4 A/s 12 A/s 20 A/s 16 A/s 4 A/s 12 A/s ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS