O-LevelPhysicsMagnetism5054/11 · May/June 2014 · Q361 Mark
An ideal transformer has a primary voltage of 600 V and a secondary voltage of 240 V. The secondary coil is attached to a resistor of resistance 120Ω. What is the power dissipated in the resistor and the current in the primary coil?
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A120 0.20
B120 5.0
C480 0.80
D480 1.3
✓ Correct answer
C: 480 0.80
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