How much potential drop exist across closed switch?
Correct answer: A. 0 V
- A. 0 V
- B. 1V
- C. 2V
- D. 3V
Explanation
When a switch is closed, it becomes a conducting path, allowing the flow of electric current. In an ideal switch, there is no resistance, and hence no potential drop occurs across the switch. This means that the voltage across a closed switch is 0V.
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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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