Electric Charges and Fields

1Coulomb's law states that the electrostatic force between two point charges is:

• ADirectly proportional to the product of charges, inversely to the distance
• BDirectly proportional to the product of charges, inversely to the square of distance
• CInversely proportional to the product of charges, directly to the distance
• DInversely proportional to the product of charges, directly to the square of distance

2The SI unit of electric field is:

• AN/C (equivalent to V/m)
• BC/N
• CN·C
• DV·m

3Gauss's law in integral form is:

• A∮E·dA = q/ε₀
• B∮E·dA = q·ε₀
• C∮E·dA = q²/ε₀
• D∮E·dA = ε₀/q

4The electric field inside a conductor in electrostatic equilibrium is:

• AMaximum
• BEqual to that outside
• CZero
• DDepends on the conductor's shape

5Two parallel plates carry equal and opposite charges. The electric field between them:

• AIncreases linearly with distance from one plate
• BDecreases with distance
• CIs uniform
• DIs zero