What happens to torque if field is non-uniform?
An electric dipole always experiences a torque when placed in uniform as well as non-uniform electric field. But in non-uniform electric field, dipole will also experience net force of attraction. So the electric dipole in non-uniform electric field experiences both torque and force.
What is meant by non-uniform electric field?
If an electric field has the same magnitude and same direction everywhere in a given space then this electric field is uniform, and if either the magnitude or direction or both change then it is a non-uniform electric field in that specified space.
What is the force on dipole in non-uniform electric field?
As seen above, the dipole-with dipole moment →p-is aligned parallel to the direction of increasing non-uniform electric field, →E. Since the magnitude of electric field increases from left to right, the force experienced by charge −q due to the field will be greater than that experienced by charge +q.
When P is parallel to e the dipole has a net force in the direction of increasing field?
It is seen that when p is parallel to E, dipole has a net force in the direction of increasing field and when p is antiparallel to E, the net force on dipole is in the direction of decreasing field. Force depends on the orientation of dipole moment with respect to the external field.
What condition is required for a dipole to experience a net force from an electric field?
1 An electric dipole experiences a net electric force if the positive charge q is subject to an electric field E (r + d) that differs from E(r) acting on the negative charge q.
Does a magnetic dipole experience a net force in an external magnetic field does it experience a torque What if the field be non-uniform?
Once the dipole is aligned in the direction of field, torque vanishes( r x F will be zero, if r and F are in same direction ). Once the dipole is aligned to electric field, the net force will be zero because they are in opposite direction. Hence in uniform field, dipole experiences only torque.
Why an electric dipole placed in a uniform electric field does not undergo acceleration?
Answer. Explanation: Because the force on negative charge and the force on positive charge equal and opposite direction so it does not undergo acceleration because Force net is always zero.