Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross section 5 mm2, is v. If the electron density in 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

Drift speed of electrons, when 1.5 A of current flows in a copper wire

1.	Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross section 5 mm2, is v. If the electron density in 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.	0.02
B.	3
C.	2
D.	0.2
Answer» B. 3

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Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross section 5 mm2, is v. If the electron density in 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

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