Current Electricity Charging Discharging Of Capacitors Question 281
Question: A galvanometer of resistance 20 W is to be converted into an ammeter of range 1 A. If a current of 1 mA produces full scale deflection, the shunt required for the purpose is
[Kerala PET 2002]
Options:
A) 0.01 W
B) 0.05 W
C) 0.02 W
D) 0.04 W
Show Answer
Answer:
Correct Answer: C
Solution:
$ \frac{i}{i _{g}}=1+\frac{G}{S} $
$ \Rightarrow ,\frac{1}{{{10}^{-3}}}=1+\frac{20}{S}\Rightarrow S=\frac{20}{999}\approx 0.02\Omega $ .
BETA
