Question

Write a relation between current and drift velocity of electrons in a conductor.use this relation to explain how the resistance of a conductor changes with the rise in temperature?

Answer 1

Given, ABCD is a trapezium in which AB||CD & AD=BC. To Show: ... [ interior angles on the same side of the transversal AE] ... (ii) ∠A + ∠D = ∠B + ∠C = 180°.

Answer 2

Relation between current and drift velocity : I = n e A v d n = Number of electrons e = Charge of electrons A = Cross - sectional area v d = Drift velocity Resistance of conductor with change in temperature : * With the increase in temperature , the drift velocity of electrons and the collision between electrons ...