Electric Fields, Forces, and Potentials

Question 1

Fundamental carrier of negative charge:

Answer 1

electron with charge = -1.6e-19 C

Question 2

Equilibrium Charge

Answer 2

the average of the two charges (ex. a +6 particle being rubbed up against a -2 particle and then having them separated results in a net charge of +1 C on both particles).

Question 3

Coulomb’s law

Answer 3

Fe = Kq1q1/r^2, where k = 9e9 Nm^2/C^2

Question 4

Conduction Definition

Answer 4

the transfer of charge by actual contact. A conductor (usually a metal) has electrons that are loosely bound to the outskirts of their atoms and can therefore easily move from one atom to another.

Question 5

Insulator Definition

Answer 5

An insulator, like wood or glass, does not have many loosely bound electrons, and therefore cannot pass charge easily.

Question 6

Magnitude of Electric Field Equation

Answer 6

E = F/q

Question 7

Electric Field Definition

Answer 7

the force per unit charge in a region of space

Question 8

Electric Field Lines Direction

Answer 8

away from a positive charge and towards a negative charge (they are drawn in the direction a POSITIVE charge would move)

Question 9

Electric Potential Definition

Answer 9

The work we would have to do on a charge to move it against an electric field.

Question 10

Electric Potential Equation

Answer 10

V = Work/q, (V)

Question 11

Electric Field between two charged plates

Answer 11

E = V/d

Question 12

Electric potential energy

Answer 12

U = qV

Question 13

To find velocity/mass/if “an object starts at rest…”

Answer 13

.5mv^2 - .5qV

Question 14

Capacitance equation

Answer 14

q/V

Question 15

Energy on a capacitor

Answer 15

.5CV^2