Physics · JEE

Magnetic Effects of Current and Magnetism Mock Test for JEE

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Subtopics in Magnetic Effects of Current and Magnetism

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Q1PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Curie temperature is the temperature above which

Q2PhysicsUnit 13: Magnetic Effects of Current and Magnetism

A fiat circular coil, carrying a current, has a magnetic moment

\mu

This question has multiple correct options

Q3PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Assertion If a charged particle enters from outside at right angles in uniform magnetic field.The maximum time spent in magnetic field may be

\frac{\pi m}{B q}

Reason It can complete only semi-circle in the magnetic field.

Q4PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Alnico is used for making permanent magnets because it has

Q5PhysicsUnit 13: Magnetic Effects of Current and Magnetism

The force between two magnetic poles is

F

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 :

Q6PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Which of the following phenomenon can be related to electric current

Q7PhysicsUnit 13: Magnetic Effects of Current and Magnetism

The distance between two magnetic poles is doubled and their pole-strength is also doubled. The force between them

Q8PhysicsUnit 13: Magnetic Effects of Current and Magnetism

To make an electromagnet, the best material which should be used is

Q9PhysicsUnit 13: Magnetic Effects of Current and Magnetism

A rectangular loop carrying a current is situated near a long straight wire such that the wire is parallel to the one of the sides of the loop and is in the plane of the loop. If a steady current lis established in wire as shown in the figure, the loop will

Q10PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Assertion: The magnetic field lines of the earth resemble that of a magnetic dipole located at the centre of the earth. Reason: The axis of the dipole coincide with the axis of rotation of the earth.

Q11PhysicsUnit 13: Magnetic Effects of Current and Magnetism

The horizontal component of earth's magnetic field at a certain place is

3.0 \times 10^{-5} \mathrm{T}

and having a direction from the geographic south to geographic north. The force per unit length on a very long straight conductor carrying a steady current of

1.2 \mathrm{A}

in east to west direction is then

Q12PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Mark the correct set of ferromagnetic substances

Q13PhysicsUnit 13: Magnetic Effects of Current and Magnetism

In a cathode ray oscillograph, the focusing of beam on the screen is achieved by

Q14PhysicsUnit 13: Magnetic Effects of Current and Magnetism

A moving coil ammeter requires a potential difference of

0.4 V

across it for full scale deflection. It has fixed shunt resistance of 0.01 ohm with a coil circuit resistance of

\boldsymbol{R}=\mathbf{1} \boldsymbol{k}

ohm. The value of shunt required to give full scale deflection when the total current is

10 A

is equal to

Q15PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Assertion To protect any instrument from external magnetic field, it is put inside an iron body. Reason Iron is a magnetic substance.

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Frequently asked questions

How long should a Magnetic Effects of Current and Magnetism mock test take?

For a topic-level test, aim for 20–30 minutes. For a full subject mock, allow 60–90 minutes to mirror JEE timing.

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Aim for 70%+ accuracy initially, then push toward 85%+ as your exam date approaches. Review explanations for every wrong answer.

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