Question
Physics Question on Resistance
A galvanometer has a resistance of 96 Ω and it is desired to pass 4% of the total current through it. The value of shunt resistance is ____?
Answer
Explanation:
It is given that,
The resistance of the galvanometer, Rg = 96Ω4% of the total current is passed through the galvanometer, i.e. Ig = 0.04
We have to find the value of shunt resistance.
Let Rs be the shunt resistance.
The shunt resistance is given by,
Rs=IgRgI−Ig⇒Rs=0.04I×96ΩI−0.04I⇒Rs=0.04I×96Ω0.96I⇒Rs=4Ω
Hence, the correct answer is 4.