To convert a galvanometer into voltmeter, the galvanometer is connected with a resistor having _ resistance in _ combination.
Correct answer: D. High, series
- A. Low, parallel
- B. Low, series
- C. High, parallel
- D. High, series
Explanation
To convert a galvanometer into a voltmeter, it needs to be connected with a resistor having high resistance in series. This increases the total resistance, approximating an ideal voltmeter which has infinite resistance, thus minimizing current draw and preventing alteration of the potential difference measured.Other configurations fail to achieve this because:Low resistance does not provide the necessary high resistance characteristic of a voltmeter.Parallel configuration allows current to bypass the galvanometer, affecting its readings.The resistor calculates using the formula R = (V/Ig) - G, ensuring the galvanometer operates effectively as a voltmeter.
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