Description

This mock test of Magnetostatics MCQ Level - 1 for IIT JAM helps you for every IIT JAM entrance exam.
This contains 10 Multiple Choice Questions for IIT JAM Magnetostatics MCQ Level - 1 (mcq) to study with solutions a complete question bank.
The solved questions answers in this Magnetostatics MCQ Level - 1 quiz give you a good mix of easy questions and tough questions. IIT JAM
students definitely take this Magnetostatics MCQ Level - 1 exercise for a better result in the exam. You can find other Magnetostatics MCQ Level - 1 extra questions,
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QUESTION: 1

An electric current passes through a long straight wire. At a distance 5 * cm* from the wire, the magnetic field is

Solution:

The correct answer is: * B*/4

QUESTION: 2

A magnetic field of exerts a force on a particle having a charge 10^{−9}C and moving in te x−y plane. Find the velocity of the particle.

Solution:

Given

** q** = 10

Magnetic force

Let velocity of the particle in

Then from the relation

We have

Comparing the coefficient of we have,

4 × 10

and 3.0 × 10

The correct answer is:

QUESTION: 3

The dimensional formula of magnetic induction is :

Solution:

QUESTION: 4

If a charge particle is describing a circle of radius * r* in a magnetic field with a time period

Solution:

So, ** T** is independent of

The correct answer is:

QUESTION: 5

Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of the magnetic moment is

Solution:

Let length of each wire is *L*

For square length of each side *L*/4

QUESTION: 6

A positively charged particle falling freely under gravity enter a region having a uniform horizontal magnetic field pointing north to south the particle will be deflected towards

Solution:

Fleming right hand rule again or unit vectors.

velocity of particle is along negative x-axis denoted by -i

magnetic field along negative z-axis denoted by -k

Therefore direction of force is along (-i x -k) = i x k = -j

-j denotes west

QUESTION: 7

A charged particle enters a magnetic field ** H** with its initial velocity making an angle of 45° with

Solution:

The correct answer is: a helix

QUESTION: 8

A wire carrying current * i* and other carrying current

Solution:

Magnetic field

*B*_{2} = 2*B*_{1}

2*B*_{1} – *B*_{1} = *B*

*B*_{1} = *B*

QUESTION: 9

A long metallic cylinder of radius ** R** has a current

Solution:

The correct answer is:

QUESTION: 10

A proton and a deutron both having the same kinetic energy, enter perpendicularly into a uniform magnetic field ** B**. For motion of proton and deutron on circular path of radius

Solution:

For charged particle on circular path

For deutron

The correct answer is:

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