Current Electricity Charging Discharging Of Capacitors Question 299
Question: An ammeter reads upto 1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A the value of the required shunt is
[AIEEE 2003]
Options:
A) 0.09 W
B) 0.03 W
C) 0.3 W
D) 0.9 W
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{i}{i _{g}}=1+\frac{G}{S} $
Therefore $ \frac{10}{1}=1+\frac{0.81}{S} $
$ \Rightarrow S=0.09\Omega $ .
BETA
