Physics · JEE

Electric current: drift velocity, mobility and their relation with electric current Concepts for JEE

23+ syllabus-aligned questions available

Quick answer

Master Electric current: drift velocity, mobility and their relation with electric current by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Electric current: drift velocity, mobility and their relation with electric current before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Electric current: drift velocity, mobility and their relation with electric current is a core JEE Main Physics subtopic under Current Electricity. Master the definitions, standard results, and typical MCQ patterns tested in JEE Main and Advanced.

Key points

Understand the definition and scope of Electric current: drift velocity, mobility and their relation with electric current in the JEE syllabus
Memorise key formulas and standard results linked to Electric current: drift velocity, mobility and their relation with electric current
Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

Revise Electric current: drift velocity, mobility and their relation with electric current with a one-page formula sheet before attempting mixed tests
After each practice set, log mistakes specific to Electric current: drift velocity, mobility and their relation with electric current and reattempt after 48 hours

Common trap

Students often rush Electric current: drift velocity, mobility and their relation with electric current questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

Syllabus context

Part of Current Electricity in JEE Main Physics.

Free sample questions

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Q1PhysicsUnit 12: Current Electricity

A straight conductor of uniform cross- section carried a current I. Let s=specific charge of an electron. The momentum of all the free electrons per unit length of the conductor, due to their drift velocities only, is

Q2PhysicsUnit 12: Current Electricity

In a metallic conductor, electric current is thought to be due to the movement of

Q3PhysicsUnit 12: Current Electricity

For a common emitter amplifier, current gain is

60 .

If the emitter current is

6.6 ~ m A

the collector current is :

Q4PhysicsUnit 12: Current Electricity

Which of the following is/are correct about the direction of holes/electron? This question has multiple correct options

Q5PhysicsUnit 12: Current Electricity

Which of the following instruments is used to check whether electricity is flowing through a substance or not?

Q6PhysicsUnit 12: Current Electricity

Assertion If we bend an insulated conducting wire, the resistance of the wire increases. Reason The drift velocity of electrons in bent wire decreases.

Q7PhysicsUnit 12: Current Electricity

Mobility of free electrons in a conductor ¡s:

Q8PhysicsUnit 12: Current Electricity

A steady current flow in a metallic conductor of non-uniform cross-section. The quantity/quantities remaining constant along the whole length of the conductor is/are:

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Frequently asked questions

What concepts in Electric current: drift velocity, mobility and their relation with electric current are essential for JEE?

Focus on core ideas across Electric current: drift velocity, mobility and their relation with electric current. JEE tests application, not just memorisation.