⚡Chapter Practice
Magnetic Effects of Current & Magnetism — JEE Practice
30 practice questions across 2 topics. Filter by difficulty, solve topic-wise MCQs, and review detailed solutions.
2 Topics30 Questions
Biot-Savart & Ampere's Law(15 Qs)
easy (5)
Q1The magnetic field due to a long straight conductor carrying current I at distance r is:Q2The SI unit of magnetic field is:Q3The magnetic field at the centre of a circular loop of radius R carrying current I is:Q4Ampere's circuital law states:Q5The direction of magnetic field around a current-carrying wire is given by:
medium (5)
Q1The magnetic field inside a solenoid of n turns per unit length carrying current I is:Q2The magnetic field on the axis of a circular loop at distance x from the centre is:Q3A toroid of N turns, mean radius R, carrying current I has magnetic field inside:Q4Two parallel wires carrying currents in the same direction:Q5The force per unit length between two parallel wires carrying 1A each, separated by 1m, is:
hard (5)
Q1The magnetic field at the centre of a square loop of side a carrying current I is:Q2The magnetic moment of a current loop of area A carrying current I is:Q3The torque on a magnetic dipole of moment m in a field B is:Q4The magnetic field due to a semi-infinite straight wire at end point at perpendicular distance d is:Q5A Helmholtz coil arrangement (2 coils of radius R separated by R) produces a nearly uniform field at the centre of magnitude:
Force on Moving Charges & Conductors(15 Qs)
easy (5)
Q1The force on a charge q moving with velocity v in a magnetic field B is:Q2A charged particle moving parallel to a magnetic field experiences:Q3The magnetic force on a charge does:Q4A charged particle in a uniform magnetic field (v ⊥ B) moves in a:Q5The force on a current-carrying conductor of length L in field B is:
medium (5)
Q1The radius of circular motion of a charged particle (mass m, charge q, velocity v) in field B is:Q2The time period of a charged particle in a magnetic field is:Q3A cyclotron uses the principle that the time period of circular motion in B is:Q4When a charged particle enters a magnetic field at angle θ to B, it traces a:Q5The force between two parallel current-carrying wires is:
hard (5)
Q1A velocity selector uses crossed E and B fields. Only particles with velocity ___ pass through undeflected:Q2The magnetic moment of a revolving electron (orbit radius r, angular velocity ω) is:Q3Hall effect: a current-carrying conductor in a transverse magnetic field develops a voltage due to:Q4A mass spectrometer separates ions of different masses by:Q5A proton and an alpha particle enter the same magnetic field with the same momentum. The ratio of their radii is:
More Physics Chapters
Need Help with Magnetic Effects of Current & Magnetism?
Get 1-on-1 doubt sessions and personalised practice analysis with MindPeak's JEE mentors.