JEE Main Solved Paper 2017 Question 15
Question: When a current of 5 mA is passed through a galvanometer having a coil of resistance $ 15,\Omega , $ it shows full scale deflection. The value of the resistance to be put in series with the galvanometer to convert it into to voltmeter of range 0 - 10 V is: [JEE Main Solved Paper-2017]
Options:
A) $ 2.535\times 10^{3}\Omega $
B) $ 4.005\times 10^{3}\Omega $
C) $ 1.985\times 10^{3}\Omega $
D) $ 2.045\times 10^{3}\Omega $
Show Answer
Answer:
Correct Answer: C
Solution:
- $ 10=(5\times {10^{-3}})(15+R) $ $ r=1985,\Omega $
