Question

state whether a voltmeter has a high resistance or low resistance. give reasons .​

Answer 1

Hey mate..

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>>As we know, V=I*R, i.e., voltage across a resistor equals the product of its resistance and current flowing through it.

>>Now, if the voltmeter has low resistance, most of the current will pass through it, rather than passing through the resistance. Thus the voltmeter will give an erroneous reading.

>>So as to prevent this sort of a problem, a voltmeter has inherent high resistance.

Hope it helps ®

Answer 2

a voltmeter measures the voltage difference between two different points (say, on different sides of aresistor), but it should not change the amount of current going through the element between those two points. So, it should have very high resistance so that it doesn't "draw" current through it.