Question 13003 of 844 · Washington 01 Journey Level Electrician Exam
What is the resistance of a 1,500 watt, 120 volt space heater element at its rated operating point?
Exactly one answer is correct.
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Correct answer to question 13003
- C: 9.6 ohms
Explanation
Resistance follows from R = E squared / P = 120 x 120 / 1,500 = 9.6 ohms. The value 12.5 is P / E, which is the current in amperes, not the resistance.
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