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The electric current in an `AC` circuit is given by `I=I_(0)sin omegat`.What is the time taken by the current to change from its maximum value to the `rms` value? |
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Answer» Correct Answer - `T//8` or `pi/(4omega)` `I_(1)=I_(0)sin omega t_(1)` `I_(0)=I_(0)sin omega t_(1)` `t_(1)=(pi//2)/(2pi//T)=T/4` & `I_(2)=I_(0)/sqrt2=I_(0) sin (omega t_(2))` `t_(2)=(pi//4)/(2pi//T)=T/8` `Deltat=t_(1)-t_(2)=T/4-T/8=T/8` |
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