Electric Charges and Fields

Q1.For a uniformly charged infinite plane sheet with surface charge density σ, the electric field is:

• Aσ / ε₀
• Bσ / (2ε₀)
• Cσ / (4πε₀)
• D2σ / ε₀

Q2.The point charge in the above problem has a value of:

• A+8.85 × 10⁻⁹ C
• B–8.85 × 10⁻⁹ C
• C+8.85 × 10⁻⁶ C
• D–8.85 × 10⁻⁶ C

Q3.According to the principle of superposition, the force on a charge due to several other charges is:

• AThe algebraic sum of individual forces
• BThe vector sum of individual forces taken one at a time
• CThe product of all individual forces
• DThe average of all individual forces

Q4.A body can be charged positively by:

• AGaining electrons
• BLosing protons
• CLosing electrons
• DGaining protons

Q5.The Gaussian surface should not pass through:

• AAny continuous charge distribution
• BAny discrete charge
• CA conducting surface
• DAn insulating surface