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Important Questions: Magnetic Effects of Current and Magnetism for JEE

17+ syllabus-aligned questions available

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The most important Magnetic Effects of Current and Magnetism questions for JEE cover conceptual traps, standard results, and numerical patterns from 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, and more. Goodmarks provides 17+ high-yield MCQs with full solutions.

Focus on what matters most. These important Magnetic Effects of Current and Magnetism questions cover high-weightage concepts from 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, and more — the topics JEE repeats every year.

Subtopics in Magnetic Effects of Current and Magnetism

  • 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

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Q1PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Alnico is used for making permanent magnets because it has
Q2PhysicsUnit 13: Magnetic Effects of Current and Magnetism
The force between two magnetic poles is FF when they are separated by certain distance. If the distance between the two poles is doubled and strength of each pole is tripled. The percentage change in the force between the two poles is :
Q3PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Assertion (A): To protect any instrument from external magnetic field, it is put inside an iron box Reason (R) : Iron is a ferromagnetic substance
Q4PhysicsUnit 13: Magnetic Effects of Current and Magnetism
A magnet makes 40 oscillations per minute at a place having magnetic field intensity of 0.1×10−50.1 \times 10^{-5} T. At another place, it takes 2.5 seconds to complete one vibration. The value of earth's horizontal field at that place is
Q5PhysicsUnit 13: Magnetic Effects of Current and Magnetism
The B-H curve (i) and (ii) shown in fig., associated with
Q6PhysicsUnit 13: Magnetic Effects of Current and Magnetism
Lis a circular ring made of a uniform wire. Current enters and leaves the rind through straight conductors which, if produced, would have passed through the centre CC of the ring. The magnetic field at C:C: This question has multiple correct options
Q7PhysicsUnit 13: Magnetic Effects of Current and Magnetism
A charged particle is projected in a plane perpendicular to uniform magnetic field. The areal velocity (area swept per unit time) of the particle is : This question has multiple correct options
Q8PhysicsUnit 13: Magnetic Effects of Current and Magnetism
The temperature at which the domain structure gets destroyed and ferromagnetic substance is converted into paramagnetic substance is called as

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Frequently asked questions

What makes a Magnetic Effects of Current and Magnetism question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Magnetic Effects of Current and Magnetism are high-weightage?

Key areas include 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, and more. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.

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