A bulb having a resistance of 150 Ω is connected to a 225 volt source, the current in the bulb will be:
Correct answer: A. 1.5 A
- A. 1.5 A
- B. 10 A
- C. 3.7350 A
- D. 250 A
- E. 100 A
Explanation
The correct answer is 1.5 A. According to Ohm's Law, which states V = I × R, you can determine the current I by rearranging the formula: I = V / R. Substituting the given values, I = 225 V / 150 Ω = 1.5 A. Other options are incorrect because they either miscalculate the division or assume incorrect values for voltage or resistance.
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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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