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A sinusoidal voltage of frequency 60 Hz ...

A sinusoidal voltage of frequency 60 Hz and peak value 150 V is applied to a series L-R circuit, where `R=20Omega` and L=40 mH.
a) Compute T, `omega, X

Text Solution

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`As I_(rms) = V_(rms)/X_(L)`
Where, `X_(L)=omegaL=2pifL` is the reactance of the inductor
Here, f=50H, L=44mH =`44xx10^(3)`H, `V_(rms)=220V`
`therefore X_(L)=2pi xx 50 xx 44 xx 10^(-3)= 13.82Omega`
`therefore` rms value of current in the circuit `I_(rms) = 220/13.82=15.9A`
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