ALTERNATING CURRENT AND DIRECT CURRENT
3 marks · NormalA 24 V power supply powers a motor drawing a current of 1.5 A. The motor operates for 5 minutes. Calculate the total energy transferred to the motor.
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10,800 J (±100)
Common mistakes: Not converting minutes to seconds; Incorrect formula used
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Marking points
M1 · 1 mark · Converts minutes to seconds correctly (5 min = 300 s). (follow-through)
M2 · 1 mark · Applies or equivalent correctly. (follow-through)
A1 · 1 mark · Correct answer: 10,800 J. (follow-through)
Worked solution
First, convert 5 minutes to seconds: .