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Home » Power Calculations » 16 » a Three 18 ohm resistors are connected in parallel across a 12 volt supply. The total power dissipation of the resistor load is: a. b. 18 watt c. 24 watt d. 36 watt Your answer "a" is not correct. "c" is the right answer. Total resistance = 18 / 3 = 6 ohms. P = E squared / R = 12 x 12 / 6 = 24 watts. Next |