JEE Main PYQ | Current & Electricity
Q1: Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross-sectional area 5 mm2 is v. If the electron density of copper is 9 × 1028/m3 the value of v in mm/s is close to (Take charge of electron to be = 1.6 × 10–19 C) (a) 3 (b) 0.2 (c) 2 …