Electrostatics.

Question 1

This is a non-contact force (like the gravitational force except instead of two masses exerting force on each other the two objects’ charges exert a force of repulsion or attraction).

Answer 1

Electrostatic Force

Question 2

The force between charges is directly proportional to the magnitude, or amount, of each charge.

Doubling one charge doubles the force.
Doubling both charges quadruples the force

The force between charges is inversely proportional to the square of the distance between them.
Doubling the distance reduces the force by a factor of 22 = (4), decreasing the force to one-fourth its original value (1/4).

This relationship is called an inverse square law because force and distance follow an inverse square relationship

Answer 2

Coulomb’s law

Question 3

When insulators are rubbed together, one gives up electrons and becomes positively charged, while the other gains electrons and becomes negatively charged.

Answer 3

Charging of friction

Question 4

When a charged conductor makes contact with a neutral conductor there is a transfer of charge.

Answer 4

Charging of conduction

Question 5

don’t let electrons move around within the material freely. Ex. Cloth, Plastic, Glass, Dry Air, Wood, Rubber

Answer 5

Insulators

Question 6

do let electrons move around within the material freely.
Ex. Metals- Silver, Copper, Aluminum

Answer 6

Conductors

Question 7

are materials which are good insulators in pure form, but their conducting properties can be adjusted over a wide range by introducing very small amounts of impurities.

Answer 7

Semiconductors

Question 8

are materials that lose all resistance to charge movement at temperatures near absolute zero (0 K or about -273oC)

Answer 8

Superconductors