Home » Power Calculations » 8 » a If 200 volt is applied to a 2000 ohm resistor, the resistor will dissipate:   a.   20 watt   b.   30 watt   c.   10 watt   d.   40 watt Your answer "a" is CORRECT! P = E squared / R = 200 x 200 / 2000 = 20 watts. Next