JEE Main Magnetic Effect of Current Practice Questions With Solutions

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JEE Main Magnetic Effect of Current Practice Questions with Solutions

The JEE Main Magnetic Effect of Current Practice Test is an important study material for all JEE Main aspirants to learn in depth about the basics of the Magnetic Effect of Current and improve their knowledge of this chapter. The JEE Main Magnetic Effect of Current Practice Questions with Solutions have a variety of questions from this chapter for students to practice and strengthen their understanding of magnetic fields and their effect.

About 2 to 3 questions may appear from this chapter on the JEE Main question paper. Usually, the question will be in the form of multiple choice questions as well as integer type questions, testing your conceptual knowledge of physics. JEE Main is a highly competitive entrance exam for all engineering aspirants. Therefore, it is essential for candidates to attempt these practice tests at least once a week to develop knowledge and precision of the topic.

Around 15 to 20 questions are available from this chapter in the JEE Main Magnetic Effect of Current Practice Questions with Solutions, covering all the essential topics. The important topics of this chapter, from which questions may appear in the entrance test, are Ampere’s Law, Biot-Savart Law, Magnetic Force on Moving Charges, Oersted’s Experiment & Basic Principle, Force Between Parallel Conductors, Concepts of Magnetism, and The practice tests, containing questions on all these topics along with their detailed solutions, will allow aspirants to understand the basic concepts well by going through the detailed explanations provided.

Magnetic Effect of Current is a scoring topic from the physics section in the exam. So, thoroughly practising the JEE Main Magnetic Effect of Current Practice Questions with Solutions on a regular basis will help students to improve their accuracy and manage their time better during the examination. It will also allow them to understand their weak areas, work on them, and gain confidence in solving questions from this topic with ease in the JEE Main exam.

JEE Main Physics Magnetic Effect of Current Practice Questions

Mathematics Chemistry

Question 1.

A proton and a deutron $(q = + e, m = 2.0 u)$ having same kinetic energies enter a region of uniform magnetic field $\vec{B}$ , moving perpendicular to $\vec{B}$ . The ratio of the radius $r_{d}$ of deutron path to the radius $r_{p}$ of the proton path is:

1 : 2

1 : 1

\sqrt{2} : 1

1 : \sqrt{2}

Question 2.

Given below are two statements :

Statement (I) : When currents vary with time, Newton's third law is valid only if momentum carried by the electromagnetic field is taken into account

Statement (II) : Ampere's circuital law does not depend on Biot-Savart's law.

In the light of the above statements, choose the correct answer from the options given below :

Both Statement I and Statement II are false

Statement I is false but Statement II is true

Both Statement I and Statement II are true

Statement I is true but Statement II is false

Question 3.

A long straight wire of radius a carries a steady current I. The current is uniformly distributed across its cross section. The ratio of the magnetic field at $\frac{a}{2}$ and $2 a$ from axis of the wire is :

4 : 1

3 : 4

1 : 1

1 : 4

Question 4.

An element $Δ l = Δ x \hat{i}$ is placed at the origin and carries a large current $I = 10 A$ . The magnetic field on the $y$ -axis at a distance of $0.5 m$ from the elements $Δ x$ of $1 cm$ length is:

JEE Main 2024 (Online) 6th April Morning Shift Physics - Magnetic Effect of Current Question 1 English

10 \times 10^{- 8} T

8 \times 10^{- 8} T

4 \times 10^{- 8} T

12 \times 10^{- 8} T

Question 5.

The electrostatic force $(\vec{F_{1}})$ and magnetic force $({\vec{F}}_{2})$ acting on a charge $q$ moving with velocity $v$ can be written :

{\vec{F}}_{1} = q \vec{B}, {\vec{F}}_{2} = q (\vec{B} \times \vec{v})

{\vec{F}}_{1} = q \vec{V} \cdot \vec{E}, {\vec{F}}_{2} = q (\vec{B} \cdot \vec{V})

{\vec{F}}_{1} = q \vec{E}, {\vec{F}}_{2} = q (\vec{V} \times \vec{B})

{\vec{F}}_{1} = q \vec{E}, {\vec{F}}_{2} = q (\vec{B} \times \vec{V})

Question 6.

In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero :

inside the outer conductor

outside the cable

in between the two conductors

inside the inner conductor

Question 7.

An electron is projected with uniform velocity along the axis inside a current carrying long solenoid. Then :

the electron will experience a force at

45^{\circ}

to the axis and execute a helical path.

the electron will be accelerated along the axis.

the electron path will be circular about the axis.

the electron will continue to move with uniform velocity along the axis of the solenoid.

Question 8.

A uniform magnetic field of $2 \times 10^{- 3} T$ acts along positive $Y$ -direction. A rectangular loop of sides $20 cm$ and $10 cm$ with current of $5 A$ is in $Y - Z$ plane. The current is in anticlockwise sense with reference to negative $X$ axis. Magnitude and direction of the torque is:

2 \times 10^{- 4} N

m

along negative

Z

-direction

2 \times 10^{- 4} N

m

along positive

X

-direction

2 \times 10^{- 4} N

m

along positive

Y

-direction

2 \times 10^{- 4} N

m

along positive

Z

-direction

Question 9.

A rigid wire consists of a semicircular portion of radius $R$ and two straight sections. The wire is partially immerged in a perpendicular magnetic field $B = B_{0} \hat{k}$ as shown in figure. The magnetic force on the wire if it has a current $i$ is:

JEE Main 2024 (Online) 31st January Morning Shift Physics - Magnetic Effect of Current Question 23 English

i B R \hat{j}

- 2 i B R \hat{j}

2 i B R \hat{j}

- i B R \hat{j}

Question 10.

Two insulated circular loop A and B of radius ' $a$ ' carrying a current of ' $I$ ' in the anti clockwise direction as shown in the figure. The magnitude of the magnetic induction at the centre will be :

JEE Main 2024 (Online) 30th January Morning Shift Physics - Magnetic Effect of Current Question 19 English

\frac{\sqrt{2} μ_{0} I}{a}

\frac{μ_{0} I}{\sqrt{2} a}

\frac{μ_{0} I}{2 a}

\frac{2 μ_{0} I}{a}