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The dimensional formula of magnetic induction is

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Important Questions on Magnetic Effects of Current

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>Objective Problems [ Level 1 ]>Q 105

The magnetic field at $P$ due to the magnet $N$ - $S$ is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>Objective Problems [ Level 1 ]>Q 106

In Thomson experiment of finding

\frac{e}{m}

for electrons, beam of electron is replaced by that of muons (particle of same charge as of electrons but mass

208

times that of electrons). No deflection condition in this case is satisfied if

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>Objective Problems [ Level 1 ]>Q 107

Electrons can be accelerated to a very high energy by means of

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>Objective Problems [ Level 1 ]>Q 108

The maximum energy of a deuteron coming out a cyclotron is

20 MeV

. The maximum energy of proton that can be obtained from this accelerator is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>[ Level 2 ]>Q 1

A charged particle

P

leaves the origin with speed

v = v_{0}

, at some inclination with the

x

-axis. There is a uniform magnetic field

B

along the

x

-axis.

P

strikes a fixed target

T

on the

x

-axis for a minimum value of

B = B_{0}

P

will also strike

T

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>[ Level 2 ]>Q 2

Two infinitely long conductors carrying equal currents are shaped as shown. The short sections are all of equal lengths. The point $P$ is located symmetrically with respect to the two conductors. The magnetic field at $P$ to any one conductor is $B$ . The total field at $P$ is

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>[ Level 2 ]>Q 3

An ionised gas contains both positive and negative ions initially at rest. If it is subjected simultaneously to an electric field along the

+ x

direction and a magnetic field along the

+ z

direction, then

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Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 3 - Magnetic Effects of Current>[ Level 2 ]>Q 4

Two protons are projected simultaneously from a fixed point with the same velocity

v

into a region where there exists a uniform magnetic field. The magnetic field strength at

B

and it is perpendicular to the initial direction of

v

. One proton starts at time

t = 0

and another proton at

t = \frac{π m}{2 q B}

. The separation between them at time

t = \frac{π m}{q B}

[where,

m

and

q

are the mass and charge of proton], will be approximately

The dimensional formula of magnetic induction is

Important Questions on Magnetic Effects of Current

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