Question 129: Current Electricity

Question

In a meter bridge experiment, for measuring unknown resistance 'S', the null point is obtained at a distance $$30 \mathrm{~cm}$$ from the left side as shown at point D. If R is $$5.6$$ $$\mathrm{k} \Omega$$, then the value of unknown resistance 'S' will be __________ $$\Omega$$.

Accepted Answer

$${R \over S} = {{70} \over {30}}$$
$$S = {3 \over 7} 	imes 5.6 	imes {10^3} = 2.4 	imes {10^3}\,\Omega $$
$$ = 2400\,\Omega $$

Current Electricity

In a meter bridge experiment, for measuring unknown resistance 'S', the null point is obtained at a distance $30 \mathrm{~cm} from the left side as shown at point D. If R is 5.6 \mathrm{k} \Omega, then the value of unknown resistance 'S' will be __________ \Omega$.

Integer / Numeric Answer Type