When 16 wires which are identical are connected in series, the effective resistance exceeds that when they are in parallel by `31 (7)/(8) Omega `Then the resistance of each wire is

A set of n identical resistors, each of resistance R Omega , when connected in series have an effective resistance X Omega and when the resistors are connected in parallel, their effective resistance is Y Omega . Find the relation between R, X and Y.

Four resistors each of resistance 2 Omega are connected in parallel. What is the effective resistance ?

The Total resistance when connected in series in 9 Omega and when connected in parallel is 2 Omega The value of two resistance are

When a resistance wire is passed through a die the cross-section area decreases by 1% , the change in resistance of the wire is

Resistance of 100 Omega and 200 Omega are connected in series with 220 V mains. When a voltmeter of 1000 Omega resistance is connected in parallel to 100 Omega , then the reading of voltmeter is

Assertion : A resistance wire is broken into four pices and all are connected in parallel. Then, net resistance becomes 1/16 times. Reason : In parallel net resistance is less than the smallest value of individual resistance.

A wire has resistance of 24 Omega is bent in the following shape. The effective resistance between A and B is

A carbon and an aluminium wire are connected in series. If the combination has equivalent resistance of (90 Omega) at ( 0^@C ), the value of the resistance of each wire at (0^@C) so that the resistance of combination does not change with temperature is

The resultant resistance of two resistance in series is 50 Omega and it is 12 Omega , when they are in parallel. The individual resistances are

Potentiometer wire of length 1 m is connected in series with 490 Omega resistance and 2 V battery. If 0.2 mV/cm is the potential gradient, then resistance of the potentiameter wire is approximately