The electric field at a point is defined as:
a) The force per unit charge at that point
b) The potential energy per unit charge
c) The work done per unit charge
d) The charge per unit area
What is the unit of the electric field?
a) Newton
b) Volt per meter (V/m)
c) Coulomb
d) Tesla
The electric potential at a point in space is:
a) The force on a positive charge placed at that point
b) The potential energy of a positive charge at that point
c) The work done to move a charge from infinity to that point
d) The charge at that point
Which of the following is true for the electric field and potential at a point?
a) Electric field is proportional to the electric potential
b) Electric field and electric potential are unrelated
c) Electric field is the gradient of electric potential
d) Electric field is the inverse of electric potential
The electric potential at a point due to a point charge is:
a) Inversely proportional to the square of the distance from the charge
b) Directly proportional to the square of the distance from the charge
c) Inversely proportional to the distance from the charge
d) Independent of the distance from the charge
The electric field is zero at a point where the potential is:
a) Constant
b) Maximum
c) Minimum
d) Zero
The work done in moving a charge q through an electric potential difference V is given by:
a) qV
b) q/V
c) V/q
d) qV²
The electric field lines point from regions of ______ potential to ______ potential.
a) Higher, lower
b) Lower, higher
c) Higher, higher
d) Lower, lower
The relationship between electric field and potential is given by:
a) E = -dV/dx
b) E = dV/dx
c) E = V/dx
d) E = -V/dx
Electric potential energy is the energy stored in a system of charges due to:
a) Their interaction with the electric field
b) Their motion through space
c) Their magnetic properties
d) Their charge-to-mass ratio
In an electric field, the potential difference between two points is:
a) Independent of the path between them
b) Dependent on the path between them
c) Zero for all points
d) Always constant
Which of the following conditions is true for a region of space with uniform electric field?
a) The potential is constant throughout the region
b) The electric field is constant, and the potential varies linearly
c) The potential is maximum at one point
d) The electric field is zero
In a uniform electric field, the electric potential is related to the electric field by:
a) V = E × d
b) V = -E × d
c) V = E/d
d) V = -d/E
The potential at a point near a positively charged object is:
a) Positive
b) Negative
c) Zero
d) Depends on the distance from the object
In a region of space where the electric field is uniform, the potential difference between two points separated by a distance d is:
a) Proportional to d
b) Inversely proportional to d
c) Constant
d) Zero
The electric potential inside a uniformly charged spherical shell is:
a) Zero
b) Constant
c) Maximum at the center
d) Inversely proportional to the radius
For a negative charge, the electric potential at a point is:
a) Positive
b) Negative
c) Zero
d) Dependent on the distance from the charge
What is the electric potential difference between two points in a uniform electric field?
a) It is always zero
b) It is proportional to the displacement along the direction of the field
c) It depends on the charge at the points
d) It depends on the path taken
The electric field is related to the gradient of the potential, which means that the electric field is:
a) Perpendicular to equipotential surfaces
b) Parallel to equipotential surfaces
c) Zero on equipotential surfaces
d) None of the above
The electric potential at a point due to a dipole decreases with distance from the dipole as:
a) r²
b) r³
c) r
d) 1/r
What is the electric potential at a point equidistant from two equal positive charges?
a) Zero
b) Positive
c) Negative
d) Depends on the magnitude of the charges
The electric potential energy of a system of charges is:
a) The sum of the potential energies of individual charges
b) Equal to the work done to assemble the charges from infinity
c) The difference between the charges
d) Zero for all configurations
When the electric field is uniform, the equipotential surfaces are:
a) Parallel to the field lines
b) Perpendicular to the field lines
c) Circular
d) Elliptical
The electric potential of a point charge depends on:
a) The charge’s mass
b) The distance from the charge
c) The temperature
d) The electric field at the point
The work done to move a positive test charge from one point to another is equal to the product of the charge and the:
a) Electric potential difference between the points
b) Electric field at the points
c) Distance between the points
d) Force on the charge at the points
The electric potential is a scalar quantity because:
a) It is the result of the interaction of multiple fields
b) It represents the magnitude of the electric field
c) It does not have a direction associated with it
d) It varies with time
Which of the following correctly describes the electric field inside a uniformly charged spherical shell?
a) It is directed towards the center of the shell
b) It is zero everywhere inside the shell
c) It is non-zero and directed outward
d) It is proportional to the radius of the shell
