Charges in Electric Fields

Question 1

How would you find the force of a charge given its electric field?

Answer 1

F = qE

Force = charge x Electric field strength

Question 2

What is an uniform electric field?

Answer 2

Equal field strength throughout the field - constant electric force
and must be perpendicular and equidistant on diagram

Question 3

Compare & contrast the forces experienced by a proton and electron in electric field

Answer 3

Proton and electron will exp. the same electric field , according to the formula F = qE. They experience the same magnitude but opposite directions

Question 4

What is the derivation for the acceleration of a charge?

Answer 4

Fnet = F e
ma = qE
a = qE/m

Question 5

What is EPE ?

Answer 5

Electrical Potential Energy converts into KE energy.

Question 6

What is formula for work?

Answer 6

W = delta U = Fd = qEd

Question 7

What is voltage?

Answer 7

Potential difference between two points or change in EPE per unit charge

Question 8

What is the formula for voltage?

Answer 8

V = W/q

Question 9

What is the formula for work done?

Answer 9

W = qV

Question 10

What is the electron volt?

Answer 10

1.602 x 10^-19 J

Question 11

How do you find the velocity of the particle?

Answer 11

W = KE
qV = 0.5mv^2