16 Questions
Define electric potential.
Electric potential is a scalar quantity that represents the potential energy per unit charge at a point in the electric field.
Explain the relationship between electric potential and electric field.
Electric potential is related to the electric field through the equation E = -∇V, where E is the electric field and V is the electric potential.
What are the two ways to describe the electric field around a charge?
The electric field around a charge can be described by electric field (E) and by electric potential (V).
Define potential difference and state its units.
Potential difference is the amount of work done in moving a unit positive charge from one point to the other against the electrostatic forces. Its units are volts (V).
Explain the concept of work done in the context of potential difference.
The work done in moving a unit positive charge from one point to another against the electrostatic forces defines the potential difference between the two points.
What is the relationship between potential difference and the distribution of source charge?
The definition of potential difference assumes that the test charge is so small that it does not disturb the distribution of the source charge.
What is the SI unit of potential difference?
volt (V)
Define potential difference in an electric field.
1 volt if 1 joule of work has to be done in moving a positive charge of 1 coulomb from one point to the other against the electrostatic forces.
What is the electric potential at a point located far away from a charge?
zero
What is the expression for the electric potential at a distance r from a point charge q?
V = k * (q/r)
What is the nature of the electric potential due to a point charge?
The electric potential due to a point charge is spherically symmetric.
What is the SI unit of electric potential?
volt (V)
What is the relation between electric potential and distance from a point charge?
The electric potential due to a point charge is inversely proportional to the distance from the charge, i.e., V ∝ 1/r.
What is the electric potential at infinity?
zero
What does the variation of electrostatic potential (V) with distance (r) from a charge q indicate?
V varies inversely with the distance from the charge, i.e., V ∝ 1/r.
What is the electric potential at a distance r from a point charge q?
V = k * (q/r)
Test your knowledge of electrostatic potential, potential difference, and capacitance with this quiz. Learn about the relationship between electric field (E) and electric potential (V) and how to calculate potential difference between two points.
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