Q1PhysicsUnit 13: Magnetic Effects of Current and Magnetism
The direction of magnetic lines of forces close to a straight conductor carrying current will be -
Physics · JEE
Ampere's law and its applications to infinitely long current carrying straight wire and solenoid Concepts for JEE
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Master Ampere's law and its applications to infinitely long current carrying straight wire and solenoid by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.
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Concept explainer
Ampere's law and its applications to infinitely long current carrying straight wire and solenoid is a core JEE Main Physics subtopic under Magnetic Effects of Current and Magnetism. Master the definitions, standard results, and typical MCQ patterns tested in JEE Main and Advanced.
Key points
- Understand the definition and scope of Ampere's law and its applications to infinitely long current carrying straight wire and solenoid in the JEE syllabus
- Memorise key formulas and standard results linked to Ampere's law and its applications to infinitely long current carrying straight wire and solenoid
- Practise 20–40 syllabus-aligned MCQs with step-by-step solutions
JEE tips
- Revise Ampere's law and its applications to infinitely long current carrying straight wire and solenoid with a one-page formula sheet before attempting mixed tests
- After each practice set, log mistakes specific to Ampere's law and its applications to infinitely long current carrying straight wire and solenoid and reattempt after 48 hours
Common trap
Students often rush Ampere's law and its applications to infinitely long current carrying straight wire and solenoid questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.
Syllabus context
Part of Magnetic Effects of Current and Magnetism in JEE Main Physics.
- Biot Savart law and its application to the current carrying circular loop
- Ampere's law and its applications to infinitely long current carrying straight wire and solenoid
- Force on a moving charge in uniform magnetic and electric fields
- Force on a current-carrying conductor in a uniform magnetic field
- The force between two parallel currents carrying conductors-definition of ampere
- Torque experienced by a current loop in a uniform magnetic field: Moving coil galvanometer, its sensitivity and conversion to ammeter and voltmeter
- Current loop as a magnetic dipole and its magnetic dipole moment, bar magnet as an equivalent solenoid, magnetic field lines
- Magnetic field due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis, torque on a magnetic dipole in a uniform magnetic field
- Para-, dia- and ferromagnetic substances with examples, the effect of temperature on magnetic properties
Free sample questions
Attempt 7 free MCQs for Ampere's law and its applications to infinitely long current carrying straight wire and solenoid. Unlock the full bank with Pro.
Q2PhysicsUnit 13: Magnetic Effects of Current and Magnetism
A long coil containing a large number of close turns of insulated copper wire.
Q3PhysicsUnit 13: Magnetic Effects of Current and Magnetism
A long solenoid has magnetic field strength of inside it
when a current of passes through it The number of turns in 1 m of the
solenoid is
Q4PhysicsUnit 13: Magnetic Effects of Current and Magnetism
A straight wire lying in a horizontal plane carries a current from north to
south. What will be the direction of
magnetic field at a point just underneath it?
Q5PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Assertion
If the current in a solenoid is reversed in
direction while keeping the same magnitude, the magnetic field energy stored in the solenoid decreases.
Reason
Magnetic field energy density is proportional to square of current
Q6PhysicsUnit 13: Magnetic Effects of Current and Magnetism
A solenoid is long and its inner
diameter is . It has 3 layers of
winding's of 1000 turns each and carries a current of 2.0 amperes.The magnetic flux for a cross-section of the solenoid is nearly.
Q7PhysicsUnit 13: Magnetic Effects of Current and Magnetism
The magnetic field generated along the axis of a solenoid is proportional to:
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