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An alternating e.m.f., e=200 sin omega t...

An alternating e.m.f., `e=200 sin omega t` is applied to a lamp, whose filament has a resistance of `1000 Omega`. The r.m.s. value of current is

A

`0.5A`

B

`1.4A`

C

`0.14A`

D

`0.04A`

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