The value of R in the above circuit to make..

Question 1 Report

The value of R in the above circuit to make the galvanometer measure 2A is

0.128

Ω

0.256

Ω

0.612

Ω

1.00

Ω

Answer Details

Given: I $_{g}$ = 50mA = 0.05A, I to be measured = 2A, r = 2 $Ω$ , I $_{s}$ = I - I $_{g}$ = 2 - 0.05 = 1.95A

Shunt(R) = $\frac{I_{g}}{I_{s}}$ x r

R = $\frac{0.05}{1.95}$ x 10 = 0.2564 $Ω$