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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IMPORTANT

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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

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Important Questions on Moving Charges and Magnetism

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CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 32

In a region magnetic field along

x

-axis changes with time according to the given graph.

Question Image

If time period, pitch and radius of helix path are

T_{0}, P_{0}

and

R

respectively then which of the following is incorrect if the particle is projected at an angle

θ_{0}

with the positive

x

-axis in

x - y

plane.

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 33

An electric field of

1500 V m^{- 1}

and a magnetic field of

0.4 Wb m^{- 2}

perpendicular to each other act on a moving electron. The minimum uniform speed along a straight line the electron could have is

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 34

A charged particle with charge q enters a region of constant, uniform and mutually orthogonal fields

\vec{E}

and

\vec{B}

with a velocity

\vec{v}

perpendicular to both

\vec{E}

and

\vec{B}

comes out without any change in the magnitude or direction of

\vec{v}

. Then

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 35

A particle of specific charge (q/m) is projected from the origin of coordinates with initial velocity [ui-vj]. Uniform electric magnetic fields exist in the region along the +y direction, of magnitude E and B. The particle will definitely return to the origin once if

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 36

An electron is moving with a velocity

2 \times 10^{6} m / s

along positive

x

-direction in the uniform electric field of

8 \times 10^{7} V / m

applied along positive

y

-direction. The magnitude and direction of a uniform magnetic field (in tesla) that will cause the electrons to move undeviated along its original path is

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 37

A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 38

A charged particle is released from rest in a region of uniform electric and magnetic fields, which are parallel to each other. The locus of the particle will be a

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Achieve CUET (UG) Physics Practice Book>Chapter 4 - Moving Charges and Magnetism>Exercise>Q 39

A particle of charge

q

and mass

m

, is moving along the

X

-axis with a velocity

v

and enters a region of electric field

E

and magnetic field $B$ , as shown in figure below. For which of the following figures will the net force on the charge be zero?

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

Important Questions on Moving Charges and Magnetism

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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