If a 1 HP motor operating at 120 volts is (746/120) = 6.21 amps, then you would expect a 1.5 HP motor operating at 120 volts to require approx _____ amps.

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Multiple Choice

If a 1 HP motor operating at 120 volts is (746/120) = 6.21 amps, then you would expect a 1.5 HP motor operating at 120 volts to require approx _____ amps.

Explanation:
At a fixed supply voltage, the current drawn by a motor is proportional to the electrical power it needs. Since 1 HP is about 746 W and a 1 HP motor at 120 V draws 6.21 A (6.21 A × 120 V ≈ 746 W), a 1.5 HP motor would require about 1.5 × 746 W ≈ 1119 W. At 120 V, the current would be I ≈ 1119 W / 120 V ≈ 9.3 A, which falls between 9 and 10 amps. This assumes similar efficiency and power factor; real current could vary slightly due to losses.

At a fixed supply voltage, the current drawn by a motor is proportional to the electrical power it needs. Since 1 HP is about 746 W and a 1 HP motor at 120 V draws 6.21 A (6.21 A × 120 V ≈ 746 W), a 1.5 HP motor would require about 1.5 × 746 W ≈ 1119 W. At 120 V, the current would be I ≈ 1119 W / 120 V ≈ 9.3 A, which falls between 9 and 10 amps. This assumes similar efficiency and power factor; real current could vary slightly due to losses.

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