Page 1 E&M - Table of Info

Coulomb constant k

k = 1/(4πε₀) = 9.0×10⁹ N·m²/C²

Vacuum permittivity ε₀

8.85×10⁻¹² C²/(N·m²)

Vacuum permeability μ₀

4π×10⁻⁷ T·m/A

Proton mass m_p

1.67×10⁻²⁷ kg

Neutron mass m_n

1.67×10⁻²⁷ kg

Electron mass m_e

9.11×10⁻³¹ kg

Elementary charge e

1.60×10⁻¹⁹ C

1 electron volt

1 eV = 1.60×10⁻¹⁹ J

Speed of light c

3.00×10⁸ m/s

1 unified atomic mass unit

1 u = 1.66×10⁻²⁷ kg = 931 MeV/c²

Universal gravitational constant G

6.67×10⁻¹¹ N·m²/kg²

g at Earth's surface (acceleration)

9.8 m/s²

g at Earth's surface (field strength)

9.8 N/kg

Unit: ampere

A (current)

Unit: coulomb

C (charge)

Unit: electron volt

eV (energy)

Unit: farad

F (capacitance)

Unit: henry

H (inductance)

Unit: hertz

Hz (frequency)

Unit: joule

J (energy)

Unit: kilogram

kg (mass)

Unit: meter

m (length)

Unit: newton

N (force)

Unit: ohm

Ω (resistance)

Unit: second

s (time)

Unit: tesla

T (magnetic field)

Unit: volt

V (electric potential)

Unit: watt

W (power)

Prefix tera

10¹², symbol T

Prefix giga

10⁹, symbol G

Prefix mega

10⁶, symbol M

Prefix kilo

10³, symbol k

Prefix centi

10⁻², symbol c

Prefix milli

10⁻³, symbol m

Prefix micro

10⁻⁶, symbol μ

Prefix nano

10⁻⁹, symbol n

Prefix pico

10⁻¹², symbol p

sin values at 0°,30°,37°,45°,53°,60°,90°

0, 1/2, 3/5, √2/2, 4/5, √3/2, 1

cos values at 0°,30°,37°,45°,53°,60°,90°

1, √3/2, 4/5, √2/2, 3/5, 1/2, 0

tan values at 0°,30°,37°,45°,53°,60°,90°

0, √3/3, 3/4, 1, 4/3, √3, ∞

Exam convention: frame of reference

Assumed inertial unless otherwise stated

Exam convention: air resistance

Assumed negligible unless otherwise stated

Exam convention: springs and strings

Assumed ideal unless otherwise stated

Exam convention: electric potential at infinity

Zero at infinite distance from an isolated point charge

Exam convention: direction of current

Direction positive charges would drift

Exam convention: batteries, wires, meters

Assumed ideal unless otherwise stated