Physics · JEE

Current Electricity Concepts for JEE

134+ syllabus-aligned questions available

Quick answer

Master Current Electricity by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Current Electricity before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Concept overview for Current Electricity covering 6 JEE syllabus subtopics including Electric current: drift velocity, mobility and their relation with electric current, Ohm's law, electrical resistance, I-V characteristics of Ohmic and non-ohmic conductors, Electrical energy and power, electrical resistivity and conductivity.

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
Understand the definition and scope of Ohm's law, electrical resistance, I-V characteristics of Ohmic and non-ohmic conductors in the JEE syllabus
Memorise key formulas and standard results linked to Ohm's law, electrical resistance, I-V characteristics of Ohmic and non-ohmic conductors
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
Revise Ohm's law, electrical resistance, I-V characteristics of Ohmic and non-ohmic conductors with a one-page formula sheet before attempting mixed tests
After each practice set, log mistakes specific to Ohm's law, electrical resistance, I-V characteristics of Ohmic and non-ohmic conductors 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.

JEE Formula Sheet

6+ important formulas for Current Electricity

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Subtopics in Current Electricity

View Current Electricity formula sheet — 6+ JEE formulas

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 the circuit shown, the heat produced in

5 \Omega

resistor is 10 calorie/sec. The heat produced/sec in

4 \Omega

resistor will be :

Q3PhysicsUnit 12: Current Electricity

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

Q4PhysicsUnit 12: Current Electricity

The equivalent Resistance: This question has multiple correct options

Q5PhysicsUnit 12: Current Electricity

Between any two points in a circuit, the sum of all

\ldots \ldots . . . . . . .

is the same through any pathway.

Q6PhysicsUnit 12: Current Electricity

Q Type your question- and of fixed emf, the resistor

\boldsymbol{R}_{1}

has fixed resistance and the resistance of resistor

\boldsymbol{R}_{2}

can be varied (but

\boldsymbol{R}_{2}

is always nonzero). Then the electric power delivered to the resistor of resistance

R_{1}

is independent of the value of resistance

\boldsymbol{R}_{2}

Reason f potential difference across a fixed resistance is unchanged, the power delivered to the resistor remains constant.

Q7PhysicsUnit 12: Current Electricity

Fuse wire should be placed in the path of wire

Q8PhysicsUnit 12: Current Electricity

There are a large number of cells available, each marked

(6 V, 0.5 \Omega)

to be used to supply current to a device of resistance

0.75 \Omega,

requiring

24 A

current. How should the cells be arranged, so that power is transmitted to the load using minimum number of cells?

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Frequently asked questions

What concepts in Current Electricity are essential for JEE?

Focus on core ideas across Electric current: drift velocity, mobility and their relation with electric current, Ohm's law, electrical resistance, I-V characteristics of Ohmic and non-ohmic conductors, Electrical energy and power, electrical resistivity and conductivity, Series and parallel combinations of resistors, temperature dependence of resistance, and more. JEE tests application, not just memorisation.