Electrical mathQuestion 1003 of 1506

A 9.6 kW resistive heater runs from a 240 V single-phase supply. What is the line current?

20 A
80 A
2304 A
40 A

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Correct answer: 40 A

I = P / E = 9600 W / 240 V = 40 A.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 7.1: Single-Phase Power Systems

Questions last reviewed: 18 October 2026

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