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Question
The work done in bringing a unit positive charge from infinity to a given point against the direction of electric field is known as ______.
Options
electric flux
magnetic potential
electric potential
gravitational potential
Solution
The work done in bringing a unit positive charge from infinity to a given point against the direction of electric field is known as electric potential.
Explanation:
The work required to get a unit positive charge from infinity to a specific place against an electric field is known as the electric potential at that point. It reflects the potential energy per unit charge at a specific position and is expressed in volts (V). This work is independent of the path taken and is only concerned with the initial and final positions.
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Answer in brief:
A charge q is moved from a point A above a dipole of dipole moment p to a point B below the dipole in an equatorial plane without acceleration. Find the work done in this process.
Three charges –q, +Q, and –q are placed at equal distances on a straight line. If the potential energy of the system of the three charges is zero, then what is the ratio of Q: q?
A dipole with its charges, - q and + q located at the points (O, -b, O) and (O, +b, O) is present in a uniform electric field E. The equipotential surfaces of this field are planes parallel to the yz plane.
(a) What is the direction of the electric field E?
(b) How much torque would the dipole experience in this field?
Electric potential due to the system of charges is calculated using the principle of ______
Derive an expression for the electric potential at a point due to a short electric dipole. Hence, write the expression for the electric potential at a point (i) dipole axis and (ii) on the dipole equator.
