Week 3: Intro to Gauss's law

Question 1

Gauss’s Law Equation

Answer 1

EAcos(theta)=q/(e04pi)

Question 2

Epsilon Naught (e0) Value

Answer 2

e0 = 8.85X10^-12 F(fardas)/m

Question 3

𝜎

Answer 3

Q/(𝝅r^2)

Question 4

Electric Flux is proportional to?

Answer 4

Sources Inside

Question 5

conductor

Answer 5

object with properties that allow charges to move about freely within it

Question 6

dipole

Answer 6

two equal and opposite charges that are fixed close to each other

Question 7

ρ (rho)

Answer 7

charge/volume

Question 8

Flux

Answer 8

How a vector field goes through an electric surface / how many field lines go through an electric field

Question 9

how is D and electric field related inside a charged object

Answer 9

As D increases, electric field increases

Question 10

What is q enc

Answer 10

the enclosed charge

Question 11

Surface area of a sphere

Answer 11

4πR^2

Question 12

Q for a sphere

Answer 12

p(4/3)πR^3

Question 13

D

Answer 13

Distance to the point of interest in a sphere

Question 14

When D and R are equal

Answer 14

The electric field of charged sphere is at its max

Question 15

E(4(pi)D^2)=

Answer 15

Q/ε0 for spherical distributions

Question 16

What is P?

Answer 16

P = charge/volume

Question 17

What is Enet?

Answer 17

Enet is the total electric field

Question 18

When an electric flux = 0

Answer 18

The electric flux will be zero when the area vector is perpendicular to the direction of the electric field

Question 19

n̂

Answer 19

a unit vector perpendicular to the plane formed by the two vectors

Question 20

Relationship D and E inside a charged sphere

Answer 20

Linear - as the distance from the center gets bigger, the charge (E) increases

Question 21

k value

Answer 21

9X10^9

Question 22

Equation for E when the POI is within the charged sphere

Answer 22

E = (pd/3Eo)

Question 23

What does D represent

Answer 23

The radius of sphere enclosing the charge

Question 24

What is P.O.I

Answer 24

point of interest

Question 25

What is the Gaussian surface also known as?

Answer 25

The closed/imaginary surface

Question 26

What shape does the electric field take on?

Answer 26

Whatever the shape of the charged surface is.

Question 27

Calculating the electric field outside of a solid sphere

Answer 27

E=kQ/D^2 or E=Q/(4pi eO D^2)

Question 28

In what direction do the electric field arrows face of a positive charge?

Answer 28

Outwards from charge

Question 29

In what direction do the electic field arrows face from a negative charge?

Answer 29

Towards the charge

Question 30

R

Answer 30

The radius of the real surface

Question 31

As D increases what does E do inside the charged object?

Answer 31

E increases

Question 32

Formula for an electric field involving a disk

Answer 32

E = (k𝜎2pi)*(1-(D/(sqrt(D^2+R^2)))

Question 33

Formula for an electric field involving a ring

Answer 33

E = (k2piRλD)/((R^2+D^2)^3/2)