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InterviewSolution
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A coil of inductance 0.50 H and resistance 100 Omega is connected to a 240 V, 50 Hz ac supply. What is the time lag between the voltage maximum and the current maximum ? |
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Answer» Solution :We have `tan PHI = ( X_(L ) - X_(C ))/( R )` `:. tan phi= ( 2pi f L )/( R ) ( :.` Here, `X_(C ) = 0` )...(2) `= ( 2 xx 3.14 xx 50 xx 0.5 ) /( 100)` `:. tan phi= 1.57` F= 50 Hz `T = (1)/( 50) = 0.02 sec` PHASE difference( rad )Time ` 2pi `0.02 `1.57 xx (pi )/( 180)`(t ) ` t = ( 0.02 xx 1.57 ) /( 2pi )xx ( pi )/( 180)` `= 3.2 xx 10^(-3) = 3.2 ms ` |
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