Question

Why does a voltmeter have high resistance. Explain

Answer 1

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