Electrostatics

Question 1 of 10

The force between two charges 0.1 m apart is 9 N. If the separation becomes 0.3 m, the force becomes

Question 2 of 10

If the distance between two point charges is doubled, the force between them becomes

Question 3 of 10

Charges on a conductor concentrate at

Question 4 of 10

A capacitor of 5 μF is charged to 10 V. The charge stored is

Question 5 of 10

Two capacitors of 3 μF and 6 μF are in series. Their combined capacitance is

Question 6 of 10

Capacitors of 2 μF and 3 μF are connected in parallel. What is the total capacitance?

Question 7 of 10

Charge stored on a 4 μF capacitor connected to 12 V is

Question 8 of 10

A capacitor stores 6 μC of charge when the voltage across it is 3 V. What is its capacitance?

Question 9 of 10

A lightning conductor protects a building by

Question 10 of 10

Two capacitors of 2 μF and 3 μF in parallel have a total capacitance of