Question

There are three voltmeter of the same range resistances $1000\Omega ,8000\Omega$ and $4000\Omega$ respectively. Best voltmeter among the following will be

• A. $10000\Omega$
• B. $8000\Omega$
• C. $4000\Omega$
• D. $\text{All}$

Answer 1

Answer: (B)

$8000\Omega$

The given resistances are $1000\Omega$ $<4000\Omega <$ $8000\Omega$

Voltmeter, generally, has very high resistance so that minimum current flows through it and thus no additional voltage gets dropped across it.

Hence the best voltmeter is the one having highest resistance i.e $8000\Omega$