Current Electricity Charging Discharging Of Capacitors Question 305

Question: The maximum current that can be measured by a galvanometer of resistance 40 W is 10 mA. It is converted into a voltmeter that can read upto 50 V. The resistance to be connected in series with the galvanometer is … (in ohm)

[KCET 2004]

Options:

A) 5040

B) 4960

C) 2010

D) 4050

Show Answer

Answer:

Correct Answer: B

Solution:

$ i _{g}=\frac{50}{10\times {{10}^{-3}}}-40=4960,\Omega $