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Wednesday, 08 April 2026
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An ammeter with a full scale deflection of 10mA has an internal resistance ...

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
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  • A 0.0167\(\Omega\)
  • B 0.0130\(\Omega\)
  • C 0.0250\(\Omega\)
  • D 0.1000\(\Omega\)
Correct Answer: Option A
Explanation:
\(R_2 = \frac{I_1R_1}{I_2} = \frac{0.01 \times 5}{2.99}\)
= 0.0167

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