Two wires P and Q of same diameter and same length are joined in parallel and the combination is connected across a battery. The resistance of P i.e. `R_(P)` is greater than resistance of Q i.e., `R_(Q)`. Which wire will became hotter.

Two metallic wires of same material and same length have different diameters. When the wires are connected in parallel across an ideal battery the rate of heat produced in thinner wire is Q_(1) and that in thicker wire is Q_(2) . The correct statement is

Two metallic wires of same material and same length have different diameter. When the wires are connected in parallel across an ideal battery the rate of heat produced in thinner wire is Q_(1) and that in thicker wire is Q_(1) . The correct statements is

A resistor R is conneted to a parallel combination of two identical batteries each with emf E and an internal resistance r. The potential drop across the resistance R is.

Two metal wires P and Q of same length and material are stretched by same load. Yheir masses are in the ratio m_(1):m_(2) . The ratio of elongation of wire P to that of Q is

Two resistance wire "A" and "B" of same material are connected in parallel to the mains.The length and diameter of wire "A" are double those of wire "B" . The amounts of heat generated "Q_(A) and "Q_(B)" in "A" and "B" will be-

Two copper wires of the same length have got different diameters a. which wire has greater resistance? b. greater specific resistance?

Two metallic wires A and B (of the same material) are connected in parallel. Wire A has length l and radius r , wire B has a length 3 l and radius 3 r . Compute the ratio of the total resistance of parallel combination and the resistance of wire A .