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A coil of inductive reactance 1// sqrt(3) Omega and resistance 1 Omega is connected to a 200 V, 50 Hz A.C. supply. The time lag between maximum voltage and current is |
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Answer» `(1)/(300)S` Resistance (R ) `= 1 Omega` We know that, `tan phi = (omega L)/(R )` `tan phi = (X_(L))/(R )` `tan phi = (1//sqrt(3))/(1)` `phi = tan^(-1)((1)/(sqrt(3)))` `phi=30^(@)` `therefore omega t = (pi)/(6)` `t=(pi)/(6omega)` `t=(pi)/(6xx(2PI f))` `t=(1)/(12f)` Here, f = 50 Hz `t=(1)/(12xx50)=(1)/(600)s`. |
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