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Electromagnetic induction

Electromagnetic induction
Which of the following circuit elements will oppose the change in circuit current?

Inductance
Capacitance
Resistance
All of the listed here

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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

24 mH
12 mH
6 mH
48 mH

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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

30 mH
48 mH
38 mH
36 mH

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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
60 N
120 N
30 N

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

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

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Electromagnetic induction
The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns.

Yes
No

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