An ammeter with a full scale deflection of 10mA... - WAEC Physics 2011 Question
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
A
0.0167\(\Omega\)
B
0.0130\(\Omega\)
C
0.0250\(\Omega\)
D
0.1000\(\Omega\)
correct option: a
\(R_2 = \frac{I_1R_1}{I_2} = \frac{0.01 \times 5}{2.99}\)
= 0.0167
= 0.0167
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