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Electromagnetic Induction - Interview Questions and Answers

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1. The direction of incViced e.m.f. can be found by
A. Laplace's law
B. Lenz's law
C. Fleming's right hand rule
D. Kirchhoff s voltage law
Explanation:
2. Which of the following circuit element stores energy in the electromagnetic field ?
A. Inductance
B. Condenser
C. Variable resistor
D. Resistance
Explanation:
3. An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be
A. 64 A/s
B. 32 A/s
C. 16 A/s
D. 4 A/s
Explanation:
4. Higher the self-inductance of a coil,
A. lesser its weber-turns
B. lower the e.m.f. induced
C. greater the flux produced by it
D. longer the delay in establishing steady current through it
Explanation:
5. An open coil has
A. zero resistance and inductance
B. infinite resistance and zero inductance
C. infinite resistance and normal inductance
D. zero resistance and high inductance
Explanation:
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