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The magnetic flux through a coil varies ...

The magnetic flux through a coil varies with time as`phi  = 5t^(2) +6t+9`. The ratio of emfatt = 3s to t=0s will

A

`9:1`

B

`1:6`

C

`6:1`

D

`1:9`

Text Solution

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The correct Answer is:
C
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