Which of the following is NOT CORRECT about potentiometer?
Correct answer: B. Its sensitivity is low
- A. It measures the emf of a cell very accurately
- B. Its sensitivity is low
- C. It is based on the null deflection method
- D. Its sensitivity is high
Explanation
Incorrect. This statement is not correct because potentiometers are highly sensitive due to their null deflection method, which avoids errors caused by current flow.
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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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