An ac voltage, whose peak value is 180 V, is across a 3100 resistor. Calculate - (a) the rms voltage across the resistor. (b) the rms and peak currents in the resistor. (c) the average power dissipated in the resistor. A transformer has 330 primary turns and 1240 secondary turns. The input voltage is 120 V and the output current is 15.0 A. (a) Is this a step-up or step-down transformer? (b) Calculate the output voltage. (c) Calculate the input current