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Electromagnetic induction

Electromagnetic induction
A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. The force on the conductor will be nearly

120 N
30 N
60 N
90 N

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Electromagnetic induction
Lenz's law is a consequence of the law of conservation of

Charge
Induced current
Energy
Induced e.m.f.

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Electromagnetic induction
For a purely inductive circuit which of the following is true?

Relative power is zero
Actual power of the circuit is zero
Apparent power is zero
Any capacitance even if present in the circuit will not be charged

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Electromagnetic induction
Increasing the field or increasing the current will decrease the force on the conductor.

No
Yes

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Electromagnetic induction
The direction of induced e.m.f. can be found by

Fleming's right hand rule
Lenz's law
Laplace's law
Kirchhoff s voltage law

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Electromagnetic induction
The polarity of the induced voltage can be determined by using the left-hand generator rule.

No
Yes

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