FAQ

What is the direction of net force on an electric dipole placed in a uniform electric field?

What is the direction of net force on an electric dipole placed in a uniform electric field?

zero
Therefore, the net force on the dipole is zero. 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. So, the correct answer is “Option A”.

What is the net force on an electric dipole placed in the electric field of a point charge?

An electric dipole is placed in an electric field generated by a point charge. The net electric force on the dipole must be zero. The net electric force on the dipole may be zero.

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What is the direction of force in a dipole?

The direction of electric dipole moment is from negative to positive charge. Hence the resultant force will always be non-zero.

What is the net force on an electric dipole when it is placed at an angle 30 in a uniform electric field?

Answer: the net force on the dipole is zero but there is a torque.

What happen when an electric dipole is placed in an electric field?

When an electric dipole is placed in a uniform electric field, it experiences a torque but no force. An electric dipole placed in a uniform electric field experiences a torque that aligns the dipole parallel to the direction of the electric field with zero net force. Hence, the net force is zero.

What is the net force and net torque on dipole in a 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.

When dipole moment P is parallel to the electric field E the dipole has a net force in the direction of the increasing field?

In either case, the net torque is zero, but there is a net force on the dipole if →E is not uniform. It is easily seen that when →p is parallel to →E , the dipole has a net force in the direction of increasing field. When →p is antiparallel to →E , the net force on the dipole is in the direction of decreasing filed.

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What is the direction of electric dipole moment?

The electric dipole moment, a vector, is directed along the line from negative charge toward positive charge. Dipole moments tend to point along the direction of the surrounding electric field.

What direction do electric field lines travel?

These pattern of lines, sometimes referred to as electric field lines, point in the direction that a positive test charge would accelerate if placed upon the line. As such, the lines are directed away from positively charged source charges and toward negatively charged source charges.

Why direction of an electric field is taken outward?

By convention, the direction of electric field is the same as that of force on a unit positive charge. As this force is outward in the field of a positive charge, and inward in the field of a negative charge, so the directions are taken accordingly.

What is the direction of net force experienced by a dipole?

Hence, as shown below, the direction of net force experienced by the dipole is along the direction of increasing electric field– As seen above, the dipole-with dipole moment p → -is aligned in the opposite direction to that of increasing electric field.

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What is the net force when electric field is not uniform?

When electric field is not uniform, the net force will be non-zero, there will also be torque on the system. When dipole moment p is parallel or anti-parallel to external field E, the net torque is zero, but there is a force on the dipole E which is not uniform.

What is an electric dipole in physics?

An electric dipole is defined as a couple of opposite charges q and –q separated by a distance d. By default, the direction of electric dipoles in space is always from negative charge -q to positive charge q. The midpoint q and –q is called the centre of the dipole. The simplest example of an electric dipole is a pair of electric charges of two

How is dipole moment induced in neutral atoms?

A dipole is induced in a neutral atom by an external electric field. The induced dipole moment is aligned with the external field. An important fact here is that, just as for a rotated polar molecule, the result is that the dipole moment ends up aligned parallel to the external electric field.