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A coil having n turns and resistance R O...

A coil having n turns and resistance `R Omega` is connected with a galvanometer of resistance `4R Omega`. This combination is moved in time t seconds from a magnetic field `W_(1)` weber to `W_(2)` weber. The induced current in the circuit is

A

`-((W_(1)-W_(2)))/(Rnt)`

B

`(n(W_(2)-W_(1)))/(5Rt)`

C

`-((W_(2)-W_(1)))/(5Rnt)`

D

`-(n(W_(2)-W_(1)))/(5Rt)`

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