JEE PHYSICS MCQ: CURRENT ELECTRICITY

1 Easy

1 of 1

Application +4 | -1

A current of

10 \mathrm{~amp}

is passing through a metallic wire of cross sectional area

4 \times 10^{-6} \mathrm{~m}^2

. If the density of the aluminum conductor is

2.7 \,\mathrm{gm/cc}

considering aluminum gives 1 electrons per atom for conduction find the drift speed of the electrons if molecular weight of aluminum is

27 \mathrm{~gm}

View answer and explanation

Correct option: C

2.6 \times 10^{-4} \mathrm{~m} / \mathrm{s}

Option C (

2.6 \times 10^{-4} \mathrm{~m} / \mathrm{s}

) is correct because it is calculated using the drift velocity formula, considering the number density of electrons.

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