Every atom makes one free electron in copper. If 1.1 ampere current is flowing in the wire of copper having 1 mm diameter, then the drift velocity (approx.) will be (Density of copper 
and atomic weight = 63)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Density of 
(mass of 1 m 3 of Cu)
Q 6.0 × × 10 23 atoms has a mass = 63 × × 10 –3 kg
∴ ∴ Number of electrons per m 3 are
Now drift velocity 
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