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Flux phi (in weber) in a closed circuit ...

Flux phi (in weber) in a closed circuit of resistance` 5` omega varies with time (in second) according to equation `phi=3t^2-5t+2`. The magnitude of average induced current between` 0` to `2s` is

A

`1.4 A`

B

`0.7 A`

C

`0.35A`

D

`0.20 A`

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