Electrostatics and capacitors

Question 1 of 10

State three factors affecting the capacitance of a parallel-plate capacitor and give three uses of capacitors.

Question 2 of 10

Explain how lightning occurs and how a lightning conductor protects a tall building.

Question 3 of 10

Capacitors in parallel have a smaller total capacitance than each one alone.

Question 4 of 10

A positively charged body has gained protons.

Question 5 of 10

The capacitance of a parallel-plate capacitor increases when

Question 6 of 10

Charging by induction leaves the body

Question 7 of 10

A dielectric between the plates increases capacitance.

Question 8 of 10

Capacitors of 4 μF and 6 μF are connected in series. Find the total capacitance.

Question 9 of 10

Doubling the distance between two charges reduces the force to one quarter.

Question 10 of 10

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