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 28 mH 24 mH 12 mH 3 mH 28 mH 24 mH 12 mH 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? 0.1 s 0.5 s 0.2 s None of the listed here 0.1 s 0.5 s 0.2 s None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A moving magnetic field will produce the same effect as a conductor that is moving. True False True False ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The direction of induced e.m.f. can be found by Lenz's law Fleming's right hand rule Kirchhoff s voltage law Laplace's law Lenz's law Fleming's right hand rule Kirchhoff s voltage law Laplace's law 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 10 H 6 H 12 H 9 H 10 H 6 H 12 H 9 H ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be 1.0 2.0 2.5 0.5 1.0 2.0 2.5 0.5 ANSWER DOWNLOAD EXAMIANS APP
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