Question

A 10 ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

• A. 1310 W
• B. 670 W
• C. 810 W
• D. 1210 W

Answer 1

Answer: (D)

1210 W

Answer 2

$P = \frac{V^{2}}{R} = \frac{(110)^{2}}{10} = \frac{12100}{10} = 1210W$