PH-1946
Electrical power and energy
Physics · Secondary 4 · Medium · Electrical power and energy
A 60 W lamp is connected to a 240 V mains supply and is switched on for 3.0 hours.
How much electrical energy does the lamp use?
How much electrical energy does the lamp use?
- 1.8 × 10⁴ J
- 6.5 × 10⁵ J
- 7.2 × 10⁵ J
- 4.3 × 10⁶ J
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