Coulomb’s law states that the electric force between two point charges is directly proportional to:

The unit of the electric field in SI is:

The superposition principle in electrostatics means:

Which constant appears in Coulomb’s law?

The direction of the electric field due to a positive point charge is:

A point charge of +2 𝞵C is placed at the origin. What is the magnitude of the electric field at a point 0.5 m away?

A charge of -4 𝞵C is located at (0,0). At (1 m, 0), the electric field points:

Two charges, +3𝞵C at (0,0) and -3𝞵C at (2 m,0), produce a net field at (1 m,0). The field is:

The electric field at a point midway between two equal positive charges is:

A charge of +1 𝞵C produces an electric field of 9,000 N/C at a certain point. What is the distance of that point from the charge?

If two charges are doubled, the electric field at a point due to them will:

A test charge is placed at a point where two fields cancel each other. This point is called:

Which arrangement produces the strongest net field at the midpoint?

The vector nature of the electric field means:

If three charges are arranged in a triangle, the net field at the centroid is found by:

A student claims that the electric field at the midpoint of two equal charges is always zero. This is:

Which setup best demonstrates the superposition principle?

If the permittivity of free space were larger, the electric field strength between charges would:

A student calculates the electric field but ignores vector directions. The result is:

Which of the following best explains why the superposition principle is essential?