Electromagnetic induction The direction of induced e.m.f. can be found by Fleming's right hand rule Lenz's law Kirchhoff s voltage law Laplace's law Fleming's right hand rule Lenz's law Kirchhoff s voltage law Laplace's law 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 3 mH 28 mH 12 mH 24 mH 3 mH 28 mH 12 mH 24 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following inductor will have the least eddy current losses? Laminated iron core Iron core Air core Powdered iron core Laminated iron core Iron core Air core Powdered iron core ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is 5 H 15 H 20 H 10 H 5 H 15 H 20 H 10 H ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will Remains same Decreases None of the listed here Increases Remains same Decreases None of the listed here Increases 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 12 A/s 4 A/s 20 A/s 16 A/s 12 A/s 4 A/s 20 A/s 16 A/s ANSWER DOWNLOAD EXAMIANS APP
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