SDI101m-week1-2

What is the electric flux through a closed surface enclosing a charge q ?

• q/4πε₀

• qε₀

• q/ε₀

• Zero

Which of the following charge distributions is most appropriate for applying Gauss's Law easily?

• Irregular charge distribution

• Dipole field

• Uniform spherical charge distribution

• Arbitrary shaped charged conductor

The SI unit of capacitance is:

• Coulomb

• Volt

• Farad

• Henry

The electric field inside a conductor in electrostatic equilibrium is:

• Very large

• Equal to the surface charge density

• Zero

• Depends on the charge

Electric potential at a point is defined as:

• Work done by the electric field in moving a unit charge from infinity to that point

• Energy stored in a capacitor

• Force per unit charge

• Electric flux through a surface

The SI unit of electric potential is:

• Newton

• Coulomb

• Volt

• Joule

Which of the following statements about equipotential surfaces is true?

• Electric field is tangent to equipotential surfaces

• Electric field is always zero on equipotential surfaces

• No work is done in moving a charge along an equipotential surface

• Equipotential surfaces are always spherical

If the electric potential in a region is constant, then the electric field in that region is:

• Constant

• Zero

• Infinite

• Directed radially

Which factor does not affect the capacitance of a parallel-plate capacitor?

• Plate area

• Distance between plates

• Dielectric material

• The amount of charge stored

A 10 µF capacitor is charged to 100 V. How much energy is stored?

• 0.05 J

• 0.5 J

• 1 J

• 5 J