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NEET Questions / Physics / Electrostatic Potential And Capacitance / Electric Dipole
Two identical electric dipoles, each with dipole moment , are placed at a distance apart, such that their axes are perpendicular to each other and the line joining their centers bisects the angle between them. The magnitude of the interaction force between them is proportional to:
1/rΒ²
1/rΒ³
1/rβ΄
1/rβ΅
An electric dipole of moment is placed in a uniform electric field . If is the angle between and , and is the potential energy, then which of the following is incorrect?
If ΞΈ = 0Β°, U = -pE
If ΞΈ = 90Β°, U = 0
If ΞΈ = 180Β°, U = pE
U is a vector quantity
A neutral conducting sphere is placed in a uniform electric field . Which of the following statements is incorrect regarding the induced dipole moment on the sphere?
A. The dipole moment is proportional to the external electric field.
B. The dipole moment is proportional to the cube of the radius of the sphere.
C. The magnitude of the electric field inside the sphere is E.
D. The dipole moment is in the direction of the external electric field.
An electric dipole of moment is placed at the center of a thin spherical shell of radius carrying a uniformly distributed charge . The potential energy of the dipole is:
Zero
An electric dipole is placed in a uniform electric field. In which orientation does it experience maximum torque?
Parallel to the field
Perpendicular to the field
Antiparallel to the field
At an angle of 45 degrees to the field
What is the SI unit of electric dipole moment?
Coulomb (C)
Volt (V)
Coulomb-meter (C m)
Newton-meter (N m)
Two equal and opposite charges separated by a small distance constitute a/an:
Electric field
Electric potential
Electric dipole
Electric flux
The electric field lines due to an electric dipole at a large distance resemble the field lines of a:
Point charge
Charged sphere
Bar magnet
Infinitely long charged wire