The expression for the current in the current

Posted on 2014-02-04 14:31:00 in Physics by MORRIS

A series circuit consists of a coil of inductance 0.111 and resistance 25? and a capacitance of 11.25 µF. Across this circuit a voltage is applied whose instantaneous value is given by y = 100 sin ?t + 20 sin (3?t + 45^o) + 5 sin (5 ?t – 30) where ? = 314 rad/s. Find (i) the expression for the current in the current (ii) rms value of current and (iii) total power absorbed.

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