A 200W bulb operates in a 220V circuit. Find the current.
Correct answer: A. 0.9 Amp
- A. 0.9 Amp
- B. 0.6 Amp
- C. 2 Amp
- D. 3 Amp
Explanation
Power = IV therefore I = P/V = 200/220 = 0.9 A. Hence Option A is correct.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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