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Electromagnetic induction

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

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

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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

90 N
30 N
60 N
120 N

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Electromagnetic induction
Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is

15 H
20 H
10 H
5 H

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Electromagnetic induction
In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be

0.5
2.0
2.5
1.0

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Electromagnetic induction
A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area, length etc.) remaining the same, the inductance will be

6 mH
48 mH
24 mH
12 mH

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

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

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