PH-659
Electrical power and energy
Physics · Secondary 3 · Medium · Electrical power and energy
A 60 W electric lamp is switched on for 2.5 hours. How much electrical energy does it use?
- 1.5×10⁴ J
- 5.4×10⁵ J
- 1.5×10⁶ J
- 5.4×10⁶ J
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