An ammeter of resistance 1.0Ω Ω has a full-scale deflection of 50mA. Determine the resultant full-scale deflection of the meter when a shunt of 0.0111Ω Ω is...

An ammeter of resistance 1.0$\Omega$ has a full-scale deflection of 50mA. Determine the resultant full-scale deflection of the meter when a shunt of 0.0111$\Omega$ is connected across its terminals.

Answer Details

V = 0.1 x 50 x 10-3 = 5 x 10-3volts

RT = $\frac{0.1\times 0.0111}{0.1+0.0111}$

= 9.99 x 10-3$\Omega$

V = IR $\Rightarrow$ I

= $\frac{5\times {10}^{-3}}{9.9\times {10}^{-3}}$

= 0.5A ; = 500mA