electricity

Question 1

charge

Answer 1

unit : C
defintion: amount of current carried charge/ s

Question 2

mass proton

Answer 2

1.62E-27 kg

Question 3

mass electron

Answer 3

9.019E-31 kg

Question 4

proton charge

Answer 4

1.6E-19

Question 5

electron charge

Answer 5

-1.6E-19

Question 6

conductors

Answer 6

charge easily moves through

Question 7

insulators

Answer 7

materials that do not allow charge to pass through

Question 8

high resistance means

Answer 8

low conductivity

Question 9

resistance eqn

Answer 9

R= ρ(L/A)
- L is length of conductor
- a is area
- ρ resistance constant for material

Question 10

conductivity eqn

Answer 10

G=c(A/L)
c = material specific constant

Question 11

coloumbs law

Answer 11

F = kQ1Q2/ (r^2)
force between two charged objects
k - constant 8.99E9

Question 12

coloumbs constant eqn

Answer 12

1/(4piEo)

Question 13

Eo

Answer 13

permitivity of free space
8.85E-12

Question 14

what does columbs law resemble

Answer 14

gravitational force

Question 15

what is electrical force proportional to

Answer 15

mass and charge of the particles
inverse of the dsitance squared

Question 16

electric field

Answer 16

E= F/q
E is electric field
F is force experienced by test charge
q is magnitude of test charge

Question 17

electric field equation in terms of coloyumbs law

Answer 17

E= kQ/r^2
where q is the magnitude of the charge originally in the electric field

Question 18

what happens to electric field as distnace increases

Answer 18

electric field decreases

Question 19

force experienced by a charge in an electriv field

Answer 19

F = E*q

Question 20

field lines

Answer 20

indicate the direction and magnitude of electric fields, the arrows in field lines point in the direction that a posirive test charge would travel in the electric field
- away from positive and toward negative

Question 21

capacitors

Answer 21

sources of charge are arannged linearly and parallel to one another

Question 22

dipoles

Answer 22

substance with 2 different stable charges at each end

Question 23

dipole in a uniform field

Answer 23

aligns with the electric field lines

Question 24

torque

Question 25

work exerted on a charge by an electric field

Answer 25

W= kQq/r

Question 26

electrical potential energy

Answer 26

U=kQq/ r
- reference point is infinity

Question 27

electical potential

Answer 27

V= kQ/r or V=U/q

Question 28

equipotential lines

Answer 28

all points that have same electrical potential

Question 29

voltage

Answer 29

potential differnce (ΔV) between 2 points
ΔV= V2-V1

Question 30

voltage in terms of work

Answer 30

Δv= U2/q - U1/a= ΔU/q