A metal wire of cross-sectional area 0.5 mm² and length 100 m is connected across a battery of emf 2 V and internal resistance 1 Ω. The density, atomic mass and electrical conductivity of the metal are 6.35 × 10³ kg m⁻³, 63.5 g/mol and 2 × 10⁸ S m⁻¹ respectively. Assuming one conduction electron per atom, the drift velocity of the electrons (in mm/s) is: [Take Avogadro's number as 6 × 10²³ and the electron charge as 1.6 × 10⁻¹⁹ C.]
- A.
0.052
- B.
0.104
- C.
0.208
- D.
0.156
