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Electromagnetic induction

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

Capacitance
All of the listed here
Inductance
Resistance

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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

36 mH
48 mH
30 mH
38 mH

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Electromagnetic induction
The coefficient of coupling between two air core coils depends on

Mutual inductance between two coils only
Self-inductance of two coils only
None of the listed here
Mutual inductance and self inductance of two coils

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Electromagnetic induction
Two 300 uH coils in series without mutual coupling have a total inductance of

300 uH
900 uH
1200 uH
600 uH

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Electromagnetic induction
A crack in the magnetic path of an inductor will result in

Zero inductance
Unchanged inductance
Reduced inductance
Increased inductance

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

Condenser
Resistance
Inductance
Variable resistor

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MORE MCQ ON Electromagnetic induction

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