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Concepts Of Physics MCQ Edition [Volume 2]PhysicsElectric Field and Potential

If an electric dipole is positioned in a uniform electric field, the net electric force exerted on the dipole

Options

  1. Acan never equal zero
  2. Bwill always be zero
  3. Cvaries with the strength of the dipole
  4. Ddepends on the dipole's orientation

Correct answer

B. will always be zero

Step-by-step solution

An electric dipole consists of two equal and opposite charges, +q and -q , separated by a small distance. When placed in a uniform electric field E , the force experienced by the positive charge is F _ + = q E and the force experienced by the negative charge is F _ - = -q E . The net electric force on the dipole is the vector sum of the forces acting on the individual charges: F _ net = F _ + + F _ - = q E - q E = 0 Thus, the net electric force on an electric dipole in a uniform electric field is always zero, regar

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