Physics · Electrostatics
Two point charges of equal magnitude and opposite signs (+q and −q) are placed at coordinates (0, +a) and (0, −a) respectively on the y-axis of a Cartesian coordinate system. Which of the following statements is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The electric dipole moment of the system is directed along the negative y-axis and has a magnitude of 2qa.
- 2The electric field at any point on the x-axis is directed parallel to the y-axis.✓
- 3The electric potential at the origin is non-zero, hence work must be done to bring a test charge from infinity to the origin.
- 4The electric field at all points on the y-axis is directed along the y-axis.
Correct answer
The electric field at any point on the x-axis is directed parallel to the y-axis.
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