What is the direction of the uniform electric field?
The electric field points in the direction of the force that would be on a positive charge. An electron will move in the opposite direction of the electric field because of its negative charge. Therefore it will move toward the left.
What is the direction of torque acting on a dipole placed in an electric field?
Derivation of Torque on an Electric Dipole
And the direction of the dipole moment is from the positive to the negative charge; it can be seen from the above equation that the torque is the cross product of the dipole moment and electric field.
What is torque experienced by dipole in uniform electric field?
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.
What is the net torque on that electric dipole?
The forces on the two charges are equal and opposite, so there is no net force on the dipole. However, there is a torque: →r=(→d2×→F+)+(−→d2×→F−)=[(→d2)×(+q→E)+(−→d2)×(−q→E)]=q→d×→E.
Can electric field be negative?
Electric field is not negative. It is a vector and thus has negative and positive directions. An electron being negatively charged experiences a force against the direction of the field. For a positive charge, the force is along the field.
What is the relationship between voltage and electric field?
potential difference: The difference in potential energy between two points in an electric field; the difference in charge between two points in an electrical circuit; voltage. electric field: A region of space around a charged particle, or between two voltages; it exerts a force on charged objects in its vicinity.
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.
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 does electric field depend on?
The magnitude of the electric field around an electric charge, considered as source of the electric field, depends on how the charge is distributed in space. … The value of the electric field has dimensions of force per unit charge.