why we use high resistance in voltmeter?
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Answer:
A voltmeter measures the difference in voltage between the two different points (say, on opposite sides of a resistor), but it does not adjust the amount of current passing between these two points through the device. It will therefore have very high resistance, so that it does not draw current through it.
Explanation:
High resistance is used in potentiometer since while measuring the EMF of a cell, it does not draw any current from the source of known EMF.
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