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3. A resistor of R-10 0hms is connected in series with an inductor L-I mH. Afera batery with the e.m.f. of 1 V is connected across this RL circuin, what is the current as a function of time, i()? (25 pts.) Ileieyl Ie9n3 10.001 YHg 4. An AC transformer has two windings, Np5000 turns, N 500 turns. If the power supplied to the load is I kW, primary voltage is 2200 V, what are the voltage and the current in the secondary winding? (25 pts.)
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