An electric dipole is placed in a uniform electric field. The net electric force on the dipole:
1. | is always zero. |
2. | depends on the orientation of the dipole. |
3. | can never be zero. |
4. | depends on the strength of the dipole. |
An electric dipole is placed in an electric field generated by a point charge.
(a) | The net electric force on the dipole must be zero. |
(b) | The net electric force on the dipole may be zero. |
(c) | The torque on the dipole due to the field must be zero. |
(d) | The torque on the dipole due to the field may be zero. |
1. | (a) only | 2. | (b), (c) |
3. | (c), (d) | 4. | (d) only |