Physics · JEE

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

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The most important Electric current: drift velocity, mobility and their relation with electric current questions for JEE cover conceptual traps, standard results, and numerical patterns from Electric current: drift velocity, mobility and their relation with electric current. Goodmarks provides 23+ high-yield MCQs with full solutions.

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Part of Current Electricity in JEE Main Physics.

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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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