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Electromagnetic induction

Electromagnetic induction
Which of the following is not a unit of inductance?

Coulomb/volt ampere
All of the listed here
Volt second per ampere
Hennry

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Electromagnetic induction
Which of the following inductor will have the least eddy current losses?

Powdered iron core
Laminated iron core
Iron core
Air core

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Electromagnetic induction
The law that the induced e.m.f. and current always oppose the cause producing them is due to

Lenz
Newton
Faraday
Coulomb

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Electromagnetic induction
As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it

Moves parallel to the direction of the magnetic field
Cuts magnetic flux
Lies perpendicular to the magnetic flux
Lies in a magnetic field

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Electromagnetic induction
The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is

12 mH
6 mH
36 mH
18 mH

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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

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