Two long wires A and B of the same material carry the same current

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

Two long wires A and B of the same material carry the same current. The diameter of wire B is twice that of wire A. Find the ratio of the drift velocities

v_{dA}:v_{dB}

of electrons in the two wires.

Related theory

Microscopic Current Model
Drift velocity and mobility
Current Electricity
Drift of electrons and origin of resistivity

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