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Question (1)

QN0038994

An electron having a charge e moves with a velocity in -direction. An electric field acts on it in Y-direction? The force on the electron acts in

(A)
positive direction of Y-axis
(B)
negative direction of -axis
(C)
positive direction of -axis
(D)
negative direction of -axis

Correct Answer: B

Explanation:

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Question (2)

QN0038995

An electric charge in uniform motion produces

(A)
an electric field only
(B)
a magnetic field only
(C)
both electric and magnetic fields
(D)
no such field at all

Correct Answer: C

Explanation:

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Question (3)

QN0038996

A charge is moving with a velocity parallel to a magnetic field . Force on the charge due to
magnetic field is

(A)
(B)
(C)
zero
(D)
v/q

Correct Answer: C

Explanation:

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Question (4)

QN0038997

The work done by a magnetic field, on a moving charge is

(A)
zero because acts parallel to
(B)
positive because acts perpendicular to
(C)
zero because acts perpendicular to
(D)
negative because acts parallel to

Correct Answer: C

Explanation:

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Question (5)

QN0038998

Lorentz force is

(A)
electrostatic force acting on a charged particle.
(B)
magnetic force acting on a moving charged particle.
(C)
the vector sum of electrostatic and magnetic force acting on a moving charged particle.
(D)
the vector sum of gravitational and magnetic force acting on a moving charged particle.

Correct Answer: C

Explanation:

As Lorentz force is given by

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Question (6)

QN0038999

An electric charge moves with velocity in an electromagnetic field given by and The -component of the force experienced by. is :

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

Lorentz force acting on the particle

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Question (7)

QN0039000

A charged particle moves with velocity in a magnetic field . The force acting on the particle has magnitude F. Then,

(A)
, if
(B)
, if
(C)
, if aA
(D)

Correct Answer: A

Explanation:

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Question (8)

QN0039001

If a particle of charge coulomb moving along the -direction with a velocity experiences a force of newton in -direction due to magnetic field, then the minimum magnetic field is

(A)
Tesla in -direction
(B)
Tesla in -direction
(C)
Tesla in -direction
(D)
Tesla in -direction

Correct Answer: D

Explanation:

Tesla in -direction

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Question (9)

QN0039002

A certain region has an electric field and a uniform magnetic field . The force experienced by a charge moving with velocity is

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

Lorentz force,

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Question (10)

QN0039003

A charge particle is moving in a uniform magnetic field . If it has an acceleration of , then the value of will be :

(A)
3
(B)
6
(C)
12
(D)
2

Correct Answer: B

Explanation:

Given that uniform magnetic field,

Acceleration

We know that

Here, , so,

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Question (1)

An electron having a charge e moves with a velocity in -direction. An electric field acts on it in Y-direction? The force on the electron acts in

Explanation:

Link:

Question (2)

An electric charge in uniform motion produces

Explanation:

Link:

Question (3)

A charge is moving with a velocity parallel to a magnetic field . Force on the charge due to magnetic field is

Explanation:

Link:

Question (4)

The work done by a magnetic field, on a moving charge is

Explanation:

Link:

Question (5)

Lorentz force is

Explanation:

Link:

Question (6)

An electric charge moves with velocity in an electromagnetic field given by and The -component of the force experienced by. is :

Explanation:

Link:

Question (7)

A charged particle moves with velocity in a magnetic field . The force acting on the particle has magnitude F. Then,

Explanation:

Link:

Question (8)

If a particle of charge coulomb moving along the -direction with a velocity experiences a force of newton in -direction due to magnetic field, then the minimum magnetic field is

Explanation:

Link:

Question (9)

A certain region has an electric field and a uniform magnetic field . The force experienced by a charge moving with velocity is

Explanation:

Link:

Question (10)

A charge particle is moving in a uniform magnetic field . If it has an acceleration of , then the value of will be :

Explanation:

Link:

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A charge is moving with a velocity parallel to a magnetic field . Force on the charge due to
magnetic field is