A galvanometer can be converted into a voltmeter by connecting it with:
Correct answer: D. High resistance in series
- A. Low resistance in parallel
- B. Low resistance in series
- C. High resistance in parallel
- D. High resistance in series
Explanation
To convert a galvanometer into a voltmeter, you need to connect a resistor in series with it. The resistor is used to limit the current passing through the galvanometer when it's connected across a voltage source, which would otherwise damage the galvanometer. The resistance of the resistor should be relatively high so that it doesn't draw too much current and affect the voltage being measured.So, when you connect a high resistance in series with a galvanometer, it becomes a voltmeter. This added resistance forms a voltage divider with the internal resistance of the galvanometer, and the voltmeter can measure the voltage across its terminals without drawing excessive current.
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