A proton of mass 1.67 × 10 - 27 kg and charge 1 . 6 × 10 - 19 C is projected with a speed of 2 × 10 6 m s - 1 at an angle of 60 ° to the x - axis. If a uniform magnetic field of 0 . 104 T is applied along y - axis, the path of proton is

A helix of radius 0 . 1 m and time period = 2 π × 10 - 7 s

A circle of radius = 0 . 2 m and time period = 2 π × 10 - 7 s

A circle of radius = 0 . 1 m and time period = 2 π × 10 - 7 s

A helix of radius 0 . 2 m and time period = 2 π × 10 - 7 s

The number of turns in a coil of Galvanometer is tripled, then

Voltage sensitivity remains constant and current sensitivity increases 3 times

Both voltage and current sensitivity remains constant

Voltage sensitivity increases 3 times and current sensitivity remains constant

Both voltage and current sensitivity decreases by 33 %

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A charged particle enters a uniform magnetic field with velocity vector at an angle of 45^o with the magnetic field. The pitch of the helical path followed by the particle is $p$ . The radius of the helix will be

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Important Questions on Moving Charges and Magnetism

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 24

A charged particle enters a uniform magnetic field with a velocity vector at an angle of

45 °

with the magnetic field. The pitch of helical path followed by the particle is

p

. The radius of the helix will be -

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 25

A charged particle is moving in a magnetic field of strength

B

perpendicular to the direction of the field. If

q

and

m

denote the charge and mass of the particle respectively, then the frequency of rotation of the particle is

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 26

A proton, a deuteron and an

α -

particle with the same kinetic energy enter a region of uniform magnetic field moving at right angles to

B .

What is the ratio of the radii of their circular paths?

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 27

A proton of mass

1.67 \times 10^{- 27} kg

and charge

1.6 \times 10^{- 19} C

is projected with a speed of

2 \times 10^{6} m s^{- 1}

at an angle of

60 °

to the

x -

axis. If a uniform magnetic field of

0.104 T

is applied along

y -

axis, the path of proton is

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 28

Two charged particles $M a n d N$ enter a space of uniform magnetic field, with velocities perpendicular to the magnetic field. The paths are as shown in figure. The possible reason (s) is/are?

Question Image

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 29

An electron has a circular path of radius

0.01 m

in a perpendicular magnetic induction

10^{- 3} T .

The speed of the electron is nearly

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 30

A uniform magnetic field

\vec{B} = B_{0} \hat{j}

exists in space. A particle of mass m and charge q is projected towards

x

-axis with speed

v

from a point (

a, 0,0) .

The maximum value of

v

for which the particle does not hit the y-z plane is

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 31

Under the influence of a uniform magnetic field a charged particle is moving in a circle of radius

R

with constant speed

v .

The time period of the motion

A charged particle enters a uniform magnetic field with velocity vector at an angle of 45o with the magnetic field. The pitch of the helical path followed by the particle is p . The radius of the helix will be

Important Questions on Moving Charges and Magnetism

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A charged particle enters a uniform magnetic field with velocity vector at an angle of 45^o with the magnetic field. The pitch of the helical path followed by the particle is $p$ . The radius of the helix will be