Current Electricity Charging Discharging Of Capacitors Question 265
Question: A galvanometer has a resistance of 25 ohm and a maximum of 0.01 A current can be passed through it. In order to change it into an ammeter of range 10 A, the shunt resistance required is
[MP PET 2000]
Options:
A) 5/999 ohm
B) 10/999 ohm
C) 20/999 ohm
D) 25/999 ohm
Show Answer
Answer:
Correct Answer: D
Solution:
$ i _{g}=i\frac{S}{G+S} $
Therefore $ 0.01=10\frac{S}{25+S} $
$ \Rightarrow ,1000S=25+S $
Therefore $ S=\frac{25}{999}\Omega $ .
BETA
