Which of the following is not correctly matched?
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Correct Answer: Option D
Detailed Explanation:
Galvanometer measures small electric currents and detects current direction using needle deflection; it does not measure electric resistance.
Voltmeter measures potential difference, Ammeter measures electric current, and Potentiometer measures electromotive force—all correctly matched.
Therefore, Galvanometer-Electric resistance is incorrectly matched, making Option 4 the correct answer.
Question 4 of 4 Current Electricity
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