Equations to Memorize

Question 1

Electric Field on Continuous Charge Distribution

Answer 1

collection of point charges organized into a shape
dE = k(dq)/r² * r̂

Question 2

Linear Charge Density (λ)

Answer 2

UNIFORM OBJECTS ONLY
Q/L
Units: C/m

Question 3

Surface Charge Density (σ)

Answer 3

UNIFORM OBJECTS ONLY
Q/A
Units: C/m²

Question 4

Volumetric Charge Density (ρ)

Answer 4

UNIFORM OBJECTS ONLY
Q/V
Units: C/m^3

Question 5

Electric Power

Answer 5

P = IΔV = I²R = ΔV²/R

Question 6

Motional emf

Answer 6

ϵ = vBL (L = conductor length)

Question 7

Inductance of Ideal Solenoid

Answer 7

L = µN²A / l
(N = number of turns)
(l = length of solenoid)
(A = cross-sectional area)

Question 8

LC Circuits

Answer 8

SIMPLE HARMONIC MOTION
ω = 1/√(LC) = 2pi/T