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Magnetic Field Due to a Straight Current Carrying Conductor

magnetic flux...

Question

magnetic flux linked with coil varies with time t as flux=t^2-4t^4 magnitude of emf induced when flux becomes zero is

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Q. The magnetic flux linked with a coil is given by the equation

ϕ = 2 t^{2} - 8 t + 16

. what will be the magnitude of flux linked with the coil, when induced emf in the coil is zero?

Q. The magnetic flux linked with a coil varies as

ϕ = 3 t^{2} + 4 t + 9

. what is the magnitude of the emf at

t = 2 s

ϕ

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.

Q. The magnetic flux linked with a coil at any instant

t

is given by the equation

ϕ = 5 t^{3} - 100 t + 300

. The magnitude of emf induced in the coil after

3 s

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:

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