The electric potential difference between two points A and B in an electric field can be defined as:
Correct answer: C. Work done in carrying a unit positive charge from A to B while keeping the charge in equilibrium.
- A. Work done in carrying a unit positive charge from infinity to B while keeping the charge in equilibrium.
- B. Work done in carrying a unit positive charge from A to infinity while keeping the charge in equilibrium.
- C. Work done in carrying a unit positive charge from A to B while keeping the charge in equilibrium.
- D. Work done in carrying a unit positive charge from A to B
Explanation
Option C is correct since it is the exact definition of potential difference between two points. Option A is incorrect since it states the definition of the potential at a point in an electric field. Option B is incorrect since it states the definition of the negative of potential at a point in an electric field. Option D is incorrect since it is incomplete and does not talk about the charge being in equilibrium.
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About Electric Potential
Electric potential is the work done per unit positive charge in bringing it from infinity to a point, while potential difference compares energy change between two points. Work includes potential due to point charges, superposition of scalar potentials, equipotential surfaces, and the relation between electric field and potential.
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