Current Electricity Charging Discharging Of Capacitors Question 263

Question: A galvanometer with a resistance of 12 W gives full scale deflection when a current of 3 mA is passed. It is required to convert it into a voltmeter which can read up to 18 V. the resistance to be connected is

[Pb. PMT 2000]

Options:

A) 6000 W

B) 5988 W

C) 5000 W

D) 4988 W

Show Answer

Answer:

Correct Answer: B

Solution:

$ R=\frac{V}{i _{g}}-G=\frac{18}{3\times {{10}^{-3}}}-12=5988,\Omega $