Question 546: Current Electricity

Question

A galvanometer of resistance ' $G$ ' is shunted by resistance of 'S' ohm. To keep the main current in the circuit unchanged the resistance to be put in series with Galvanometer is

Accepted Answer

$$\begin{aligned}
& 	ext { Now, } G=\left(\frac{G S}{S+G}ight)+S^{\prime} \
	herefore \quad & G-\frac{G S}{S+G}=S^{\prime} \
	herefore \quad & S^{\prime}=\frac{G^2}{S+G}
\end{aligned}$$

Answer

$\mathrm{\frac{G^2}{S+G}}$

Answer

$\frac{\mathrm{G}}{\mathrm{S}+\mathrm{G}}$

Answer

$\mathrm{\frac{S^2}{G+S}}$

Answer

$\mathrm{\frac{G S}{S+G}}$

Current Electricity

A galvanometer of resistance ' G ' is shunted by resistance of 'S' ohm. To keep the main current in the circuit unchanged the resistance to be put in series with Galvanometer is

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