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An alternating voltage of 220 volt r.m.s...

 An alternating voltage of 220 volt r.m.s. at a frequency of 40 cycles/second is supplied to a circuit containing a pure inductance of 0.01 H and a pure resistance of 6 ohms in series. Calculate
Q (i) the current

Text Solution

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Phase angle`phi=tan^(-1)(omegaL)/(R)`
`thereforephi=tan^(-1)(0.4189)=22^(@)46’`
  Now time lag=`(phi)/(360)xxT=(phi)(360)xx(1)/(phi)=(22^(@)46)/(360xx40)`=0.01579second
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