It is easier to start a car engine on a hot day than on a cold day. This is because the internal resistance of the car battery
Correct answer: A. Decreases with rise in temperature
- A. Decreases with rise in temperature
- B. Increases with rise in temperature
- C. Decreases with a fall in temperature
- D. Does not change with a change in temperature
Explanation
Decreases with rise in temperature - Correct: The internal resistance of a battery decreases as temperature increases, allowing more current to flow, which helps start the engine easily on a hot day
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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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