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Question (1)

QN0038832

An electric dipole is placed at an angle of to a non-uniform electric field. The dipole will experience

(A)
a translational force only in the direction of the field
(B)
a translational force only in the direction normal to the direction of the field
(C)
a torque as well as a translational force
(D)
a torque only

Correct Answer: C

Explanation:

The electric field will be different at the location of force on the two charges. Therefore the two charges will be unequal. This will result in a force as well as torque.

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Question (2)

QN0038833

Which of the following graphs shows the correct variation in magnitude of torque on an electric dipole rotated in a uniform electric field from stable equillibrium to unstable equillibrium?

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

Correct Answer: A

Explanation:

(b)

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Question (3)

QN0038834

If the dipole of moment is placed into an electric field of magnitude such that the fields lines are aligned at with the line joining to the dipole, what torque acts on the dipole?

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

Correct Answer: B

Explanation:

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Question (4)

QN0038835

An electric dipole is placed at an angle of with an electric field of intensity , It experiences a torque of . Calculate the charge on the dipole if the dipole length is .

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

Correct Answer: D

Explanation:

Torque,

or,

Dipole moment,

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Question (5)

QN0038836

On decreasing the distance between the two charges of a dipole which is perpendicular to electric field and decreasing the angle between the dipole and electric field, the torque on the dipole

(A)
increases
(B)
decreases
(C)
remains same
(D)
cannot be predicted

Correct Answer: B

Explanation:

Since on decreasing the distance between the two charges, and on decreasing angle between the dipole and electric field, decreases therefore torque decreases.

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Question (1)

An electric dipole is placed at an angle of to a non-uniform electric field. The dipole will experience

Explanation:

Link:

Question (2)

Which of the following graphs shows the correct variation in magnitude of torque on an electric dipole rotated in a uniform electric field from stable equillibrium to unstable equillibrium?

Explanation:

Link:

Question (3)

If the dipole of moment is placed into an electric field of magnitude such that the fields lines are aligned at with the line joining to the dipole, what torque acts on the dipole?

Explanation:

Link:

Question (4)

An electric dipole is placed at an angle of with an electric field of intensity , It experiences a torque of . Calculate the charge on the dipole if the dipole length is .

Explanation:

Link:

Question (5)

On decreasing the distance between the two charges of a dipole which is perpendicular to electric field and decreasing the angle between the dipole and electric field, the torque on the dipole

Explanation:

Link:

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