Discrete Qs 1-6

Question 1

Relationship between force and distance

Answer 1

Force is inversely proportional to square of the distance F=1/r^2

Question 2

relationship between electric field and distance

Answer 2

electric field is inversely proportional to the square of the distance E=1/r^2

Question 3

Given voltage, an amount of charge, how would you calculate the kinetic energy?

Answer 3

W = ∆U = q∆V
Potential energy (∆U) = charge x voltage

Question 4

Electric field equation

Answer 4

E = Fe/q = kq/r^2

Electric field = electrostatic force / charge = 9e9(source charge)/distance^2

Question 5

net torque of a dipole

Answer 5

τ = pEsinθ
torque = (dipole moment)(magnitude of electric field)sinθ

Question 6

Dipole moment can be calculated as

Answer 6

p=qd

dipole moment = (charge)x(distance)

Question 7

permeability of free space amount

Answer 7

1.257e-6 Henry/meter