O-LevelPhysicsElectricity5054/12 · Oct/Nov 2020 · Q331 Mark
A 240V mains circuit contains eight 60W lamps in parallel. At the time when the lamps are switched on, the filaments are cold and the current is four times as large as the final steady current in the circuit. What is the initial current supplied by the mains?
A0.25 A
B1.0 A
C2.0 A
D8.0 A
✓ Correct answer
D: 8.0 A
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