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Electromagnetic induction

Electromagnetic induction
Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla

100 N
400 N
300 N
1000 N

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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

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

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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

Capacitance
Self-inductance
Mutual inductance
Series aiding inductance

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Electromagnetic induction
In case of an inductance, current is proportional to

Voltage across the inductance
Magnetic field
None of the listed here
Both of the listed here

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Electromagnetic induction
Two coils have inductances of 8 mH and 18 mH and a coefficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be

48 mH
36 mH
38 mH
30 mH

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Electromagnetic induction
Which of the following circuit element stores energy in the electromagnetic field?

Variable resistor
Resistance
Condenser
Inductance

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