Question

What is a dipole?
what is force acting on dipole?
what is torque on dipole?
expression for potential energy of dipole.​

Answer 1

Answer:

• In electromagnetism, there are two kinds of dipoles: An electric dipole deals with the separation of the positive and negative charges found in any electromagnetic system. A simple example of this system is a pair of electric charges of equal magnitude but opposite sign separated by some typically small distance.
• The total force on the dipole is the sum of the forces on the individual charges. Unless the electric field at the location r + d of the positive charge differs from that at the location r of the negative charge, the separate contributions cancel.
• Since dipole moment is given by. p = qd. 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.
• 3.4: Potential Energy of a Dipole in an Electric Field. P.E=−pEcosθ=−p⋅E. This is negative when θ is acute and positive when θ is obtuse. You should verify that the product of p and E does have the dimensions of energy

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Answer 2

Answer:

1)In electromagnetism, there are two kinds of dipoles: An electric dipole deals with the separation of the positive and negative charges found in any electromagnetic system. A simple example of this system is a pair of electric charges of equal magnitude but opposite sign separated by some typically small distance.

2)The total force on the dipole is the sum of the forces on the individual charges. Unless the electric field at the location r + d of the positive charge differs from that at the location r of the negative charge, the separate contributions cancel.

3)When an electric dipole moment is kept in an electric field, force acts on both charges in a dipole. The force acting on the charges acts as a couple and the dipole experiences a torque. ... θ is the angle between the dipole and electric field.

4)3.4: Potential Energy of a Dipole in an Electric Field. P.E=−pEcosθ=−p⋅E. This is negative when θ is acute and positive when θ is obtuse. You should verify that the product of p and E does have the dimensions of energy.

Explanation:

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