PH-1923
Electrical power and energy
Physics · Secondary 4 · Easy · Electrical power and energy
A 100 W lamp is connected to a 250 V mains supply. Assuming it operates at its rated power, what current does it draw from the supply?
Use the power formula relating , and .
Use the power formula relating , and .
- 0.25 A
- 0.40 A
- 4.0 A
- 18000 A
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