An electric dipole placed in uniform electric field experiences a torque which align the dipole parallel to the direction of the electric field with zero net force.
When an electric dipole is placed in a uniform electric field it experiences a force as well as torque?
Now, In a uniform electric field, both the point charges comprising the dipole will experience force, equal in magnitude and opposite in direction. Though the net force will always be zero, the torque will be in the same direction for both the charges. Hence torque will not be zero. Option (C) is the correct answer.
Why electric dipoles experience a torque when it is placed in a uniform electric field?
When a dipole is placed in a uniform electric field and dipole vector direction is not parallel to field direction, each chargs of dipole experiences a force. Magnitude of the two forces are equal but in opposite direction. … Hence in uniform field, dipole experiences only torque.
When dipole placed in parallel to the uniform electric field it experiences?
Explanation :- A dipole is placed in a uniform electric field with its axis parallel to the field , means angle between dipole moment and electric field is zero. Hence, it doesn’t experience torque. Hence, it experiences force .
What happens when an electric dipole is placed in a uniform magnetic field?
When a magnetic rod, (which can be taken as a magnetic dipole), is kept in a uniform magnetic field, the North Pole senses a force equal to the multiplication of the magnetic field intensity and the pole strength in the magnetic field direction.
At what position is the electric dipole in uniform electric field?
Even if we change the orientation, the length and the charge of the dipole, the net force on the dipole will be equal to zero. Hence, the electric force on a dipole when it is placed in a uniform electric field is always zero.
When an electric dipole is held at an angle in a uniform electric field?
1) the forces experienced by the 2 charges constituting the electric dipole when placed in an uniform external electric field are equal and opposite in nature, the net force on the dipole is zero. No torque act on the dipole when the moment of electric dipole is parallel to the electric field.
What is the formula of torque in electric field?
Show that the torque on an electric dipole placed in a uniform electric field is. τ =P. ×E.
What is dipole in electric field?
A pair of electric charges with an equal magnitude but opposite charges separated by a distance d is known as an electric dipole. The electric dipole moment is a vector having a defined direction from the negative charge to the positive charge. …
How does a dipole behave in electric field?
In an electric field a dipole undergoes a torque, tending to rotate so that its axis becomes aligned with the direction of the electric field. … The electric dipole moment, a vector, is directed along the line from negative charge toward positive charge.
What happens when an electric dipole is placed in non uniform electric field?
If an electric dipole is placed in a nonuniform electric field, then the positive and the negative charges of the dipole will experience a net force. And as one end of the dipole is experiencing a force in one direction and the other end in the opposite direction, so the dipole will have a net torque also.
Why an electric dipole placed in a uniform electric field does not undergo acceleration?
Explanation: Beacause the force F=qE on positive charge and force F= -qE on negative charge and these force act on dipole equal and opposite at 180° degree angle in uniform electric field. Fnet on dipole always zero and dipole dose not undergos accleration.