Question

When two known resistances R and S are connected in the left and right gaps of a metre bridge, the balance point is found at a distance l1from zero end of the metre bridge wire. An unknown resistance X is now connected in parallel to the resistance S and the balance point is now found at distance l2 from the zero end of the metre bridge wire. Obtain a formula for X in terms of l1 ,l2 and S

Answer 1

The circuit below is used to determine the capacitance of an unknown capacitor by measuring its RC constant using a known resistance R = 15.0 k