Acircuit has an ac voltage source in series with a 50 ohm resistor and a 113 mh inductor. the frequency is 100 cycles/sec, and the peak voltage is 140 volts. find the average power dissipated by the resistor. solve using imaginary numbers.

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?