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An alternating emf, e=200 sin omegat is ...

An alternating emf, e=200 sin `omegat` is applied to a lamp, whose filament has a resistance of `1000Omega`. The rms valve of current is

A

0.5A

B

1.4A

C

0.14A

D

0.04A

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(rms)=(e_(rms))/(R)`
`=(e_(0))/(sqrt(2)R)`
`=(200)/(sqrt(2)xx1000)=0.1414A`
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