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A coil of resistance {400} is placed in a magnetic field. If t

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A coil of resistance $400 Ω$ is placed in a magnetic field. If the magnetic flux $ϕ$ (wb) linked with the coil varies with time $t$ (sec) as $f = 50 t^{2} + 4$ , the current in the coil at $t = 2$ sec is

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2 A

1 A

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A coil of resistance

400 Ω

is placed in a magnetic field. If the magnetic flux

ϕ

(wb) linked with the coil varies with time

t

(sec) as

f = 50 t^{2} + 4

, the current in the coil at

t = 2

sec is

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Text solutionVerified

CBSE AIPMT 2012

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Question Text	A coil of resistance $400 Ω$ is placed in a magnetic field. If the magnetic flux $ϕ$ (wb) linked with the coil varies with time $t$ (sec) as $f = 50 t^{2} + 4$ , the current in the coil at $t = 2$ sec is
Answer Type	Text solution:1
Upvotes	150