A uniform wire is cut into two pieces such that on piece is twice as long as the other. The two piece are connected in parallel in the left gap of a meterbridge. When a resistance of `20Omega` is connected in the right gap, the null point is obtained at a distance of 60cm from the right end of the wire. Find the resistance of the wire before it was cut into two pieces.

The unknown resistance is placed in a left gap and a resistance of 50 Omega in right gap of meter bridge. The null point is obtained at 60 cm from the right gap. Determine the unknown resistance.

The balance point is obtained at 40 cm from left end in meter bridge. Then the ratio of resistance in the gap is

In an experiment of meter bridge, a null point is obtaining at the center of the bridge wire. When a resistance of 10 ohm is connected in one gap, the value of resistance other gap is

With an unknown resistance X in the left gap and a resistance of 30 Omega in the right gap of meter bridge . The null point is obtained at 40 cm from the left end of the wire . Find i) the unknown resistance and ii)the shift in the position of the null point , when the resistances in both the gaps are increased by 15 Omega .

A coil of unknown resistance is placed in the left gap of a metre bridge and a resistance R is placed in the right gap. The null point is obtained at a distance of 40 cm from the left end. When a resistance of 10 ohm is connected in series with the coil and the same resistance R is kept in the right gap,the null point is obtained at the centre of wire. Find the resistance of the coil.

To find the resistance of a gold bangle, two diametrically opposite points of the bangle are connected to the two terminals of the left gap of a metre bridge. A resistance of 4 Omega is introduced in the right gap. What is the resistance of the bangle if the null point is at 20 cm from the left end?.

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.

With an unknown resistance X in the left gap and a resistance of 30 Omega in the right gap of meter bridge . The null point is obtained at 40 cm from the left end of the wire . Find i) the unknown resistance and ii)the shift in the position of the null point , when the resistance in each gap is shunted by a resistance of 8 Omega .

If two resistors connected in parallel, the effective resistance of the combination is 21 Omega . If the same two resistors are connected in series, the effective resistance of the combination is 100 Omega . Find the resistances of the individual resistors.

An accumulator of 5 volt is connected through a resistance of 40Omega to a potentiometer wire 10 m long and of resistance 10Omega . For a cell, the null point is found at a length of 8 m from the common terminal. The current through the wire is