With two resistance `R_1 and R_2 (>R_1)` in the two gaps of a metre bridge the balance was found to be 1/3 m from the zero end. When a`6 Omega `resistance is connected in series with the smaller of the two resistance, the point is shifted to 2/3 m from the same end, then` R_1 and R_2 ` Find the resistance of the two wires.

Two resistances are connected in the two gaps of a meter bridge. The balance point is 20 cm from the zero end. When a resistance 15 Omega is connected in series with the smaller of two resistance, the null point shifts to 40 cm. The smaller of the two resistance has the value.

The resistance in the left gap of a metre bridge is 10Omega and the balance point is 40 cm from the left end. Calculate the value of unknown resistance.

In a metre bridge [Fig. 3.27], the balance point is found to be at 39.5 cm from the end A, when the resistor R is of 12.5 Omega . Determine the balance point of the bridge above if R and S are interchanged. :

n cells of e.m.f E and internal resistance r are connected in series with an external resistance R . the current will increase n times that of a single cell, if

In comparing the resistance of two cells P and Q with a sides wire bridge, a balance point is obtained when the sliding contact is 30 cm from the zero end of the wire. The resistances P and Q are interchanged and the balance is obtained at 120 cm from the same emf. Find the ratio of the resistance P and Q and the length of the bridge wire

Four resistance R_1,R_2,R_3 and R_4 are connected in parallel. The resultant resistance R is

The total resistance of two resistors, when connected in series is 9Omega and when connected in parallel, their total resistance ecomes 2Omega . Find the value of each resistance.