An ammeter with a full scale deflection of 10mA has an internal resistance 0.5\(\Omega\). calculate the resistance of th.... Question 18770

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

0.0167\(\Omega\)

0.0130\(\Omega\)

0.0250\(\Omega\)

0.1000\(\Omega\)

Correct answer is A

\(R_2 = \frac{I_1R_1}{I_2} = \frac{0.01 \times 5}{2.99}\)

= 0.0167

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