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Magnetic Field and Field Lines

64. graph bet...

Question

64. graph between magnetic flux and induced emf

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Q. Magnetic flux

(ϕ)

linked through the coil changes with respect to time

(t)

according to following graph, then induced emf

(e)

(t)

graph for coil is:

Q. The magnetic flux linked with a coil is

ϕ

and the emf induced in it is

ε

.

Q. The graph shows the variation in magnetic flux

ϕ (t)

with time through a coil. Which of the statement given below is not correct.

(correct answer + 2, wrong answer - 0.50)

Whenever the magnetic flux () linked with a coil changes the emf is induced in the circuit, This emf lasts

Q. Assertion (A): Whenever the magnetic flux linked with a closed coil changes there will be an induced emf as well as an induced current.
Reason (R): According to Faraday, the induced emf is inversely proportional to the rate of change of magnetic flux linked with a coil.

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