An ammeter with a full-scale deflection of 10mA has an internal resistance 0.5Ω. calculate the resistance of the shunt required to adapt it to read up to 3A

A. 0.0167Ω
B. 0.0130Ω
C. 0.0250Ω
D. 0.1000Ω

Correct Answer: Option A

A. 0.0167Ω

Explanation

R2=I1.R1/I2=0.01×5/2.99

= 0.0167