Home Physics Current Electricity Karnataka - CET Previous Year Question Though the electron drift velocity is small …
Physics Current Electricity Karnataka - CET Previous Year Question MCQ (Single Correct)

Though the electron drift velocity is small and electron charge is very small, a conductor can carry an appreciably large current because

A
electron number density depends on temperature
B
electron number density is very large
C
relaxation time is small
D
drift velocity of electron is very large.

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The correct answer is:
B

Current
The large value of I is because of number density of free electrons in a conductor which is of the order

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