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Moving Charges and Magnetism
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Easy Questions
Moving Charges And Magnetism
Physics
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AIIMS
Easy Qs
Med Qs
Hard Qs
>
A charge q is moving with a velocity v parallel to a magnetic field B. Force on the charge due to magnetic field is
A
qvB
B
qB/v
C
Zero
D
Bv/q
Easy
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>
The following cases in which no force is exerted by a magnetic field on a charge is
A
moving with constant velocity
B
moving in a circle
C
at rest
D
moving along a curved path
Easy
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>
The force acting on a charge q moving with a velocity V in a magnetic field of induction B is given by :
A
V
×
B
q
B
q
V
×
B
C
q
(
V
×
B
)
D
(
V
.
B
)
q
Easy
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>
A proton moving in a straight line enters a strong magnetic field along the field direction then its path and velocity will be
A
path is circular but speed constant
B
path is same but velocity increases
C
path is same and velocity remains constant
D
path is same and motion is retarded
Easy
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>
A proton is traveling due north. If a uniform magnetic field is applied vertically down then the particle
a) deflected towards west
b) revolves in anti clock wise direction
c) acquires acceleration
d) comes to rest
A
a, b, c are correct
B
a, d are wrong
C
b, d are wrong
D
b, c, d are correct
Easy
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>
A charged particle is projected perpendicular to a uniform magnetic field. Arrange the following in correct order of occurrence :
A) The direction of momentum of the particle changes
B) The particle experiences a force
C) The particle revolves in a circular path
A
A,B,C
B
B,A,C
C
C,B,A
D
C,A,B
Easy
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>
A charge moving with velocity v in X - direction is subjected to a field of magnetic induction in the negative X direction. As a result the charge will
A
retard along X-axis
B
move along a helical path around X axis
C
remain unaffected
D
starts moving in a circular path
Easy
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>
If an electron of velocity is
2
i
+
4
j
is subjected to magnetic field of
4
k
, then, for the electron ,
A
speed will change
B
path will change
C
velocity is Constant
D
momentum is Constant
Easy
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>
A vertical straight conductor carries a current vertically upwards. A point
P
lies to the east of it at a small distance and another point
Q
lies to the west at the same distance the magnetic field at
P
is :
A
greater than at
Q
B
same as at
Q
C
less than at
Q
D
greater or less than at
Q
depending upon the strength of current
Easy
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>
If a charged particle is projected perpendicular to a uniform magnetic field, then
a) it revolves in circular path
b) its K.E. remains constant
c) its momentum remains constant
d) its path is spiral
A
only a, b are correct
B
only a, c are correct
C
only b, d are correct
D
only a, d are correct
Easy
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>