Electric potential at a point is
- A. a vector measured in newtons per coulomb
- B. the work done per unit positive charge in bringing it from infinity to that point
- C. the force per unit charge
- D. the charge stored per unit voltage
Explanation
Potential is a scalar measured in volts, so potentials from several charges are added arithmetically with their signs rather than as vectors, which makes it far easier to handle than field intensity. Force per unit charge is the field, and charge per unit voltage is capacitance. Only differences in potential have physical meaning, which is why infinity is chosen as the zero.
Related questions
The work done in moving a charge between two points on the same equipotential surface is
An electron volt is the energy gained by an electron when it moves through a potential difference of
The relationship between uniform electric field intensity E and potential difference V across a separation d is
Two protons are brought closer together. The electrostatic potential energy of the pair