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The variation of magnetic flux with time is shown. The variation of induced emf with time is shown as

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Important Questions on Electromagnetic Induction

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 5
The magnetic flux through a loop varies according to the relation ϕ=8t2+6t+C, Where C is constant, ϕ is in milliweber and t is in second. What is the magnitude of induced e.m.f. in the loop at t=2 seconds?
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 6

If the rod PQ rotates with angular speed ω about its mid-point (M), and magnetic field B→ is out of the plane of motion, then emf induced between ends PQ will be (PQ is the length of rod)

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 7
When $0.5 \mathrm{~A}$ current passes through an inductor coil, the flux linked with it is $0.15 \mathrm{~Wb}$, then the self-inductance of the coil is
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 8
If N is the number of turns in a coil, then self-inductance varies as (length and cross sectional area is same)
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 9
An AC generator converts
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 10
The energy stored in an inductor of self-inductance L carrying current I is
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 12
Inductance is the ratio of total magnetic flux linkage to _____ .
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 13
The magnetic flux linked with a coil is changing with time t(second) according to ϕ=6t2−5t+1. Where ϕ is in Wb. At t=0.5S, the induced current in the coil is _____. The resistance of the circuit is 10Ω.