question_answer

A moving coil galvanometer has resistance \[50\Omega \]and it indicates full deflection at 4mA current. A voltmeter is made using this galvanometer and a \[5k\Omega \]resistance. The maximum voltage, that can be measured using this voltmeter, will be close to:                  [JEE Main 9-4-2019 Morning]

A) 10 V    

B) 20 V

C) 40 V

D) 15 V

Correct Answer: B

Solution :

[b]

Option [b]