Unit prefixes, symbols and units for unit 1 exam

Physics Alphabet AS Unit 1

Quantities, symbols and units for key quantities in Unit 1

Quantity	Symbol	Unit	Unit symbol
Energy	E	Joule	J
Energy	E	Electron volts	eV  (1eV= 1.6 x 10^-19 J
Kinetic energy	Ek	Joule	J
Frequency	f	Hertz	Hz
Wavelength	λ	metre	m
Momentum	p  (or mv)	Kilogram metres pe second	Kgm/s
Charge	Q	Coulomb	C
Current	I	Amp	A
Potential Difference	V	Volt  (or Joule per coulomb)	V
Resistance	R	Ohm	Ω
Power	P	Watt ( or joule per second)	W  (or J/s)
Resistivity	ρ	Ohm metre	Ωm

Here are the unit prefixes you will actually need to know, have deleted the irrelevant ones.

Factor Name  Symbol 1012 tera T 109 giga G 106 mega M 103 kilo k

Factor Name  Symbol 10-2 centi c 10-3 milli m 10-6 micro µ 10-9 nano n 10-12 pico p 10-15 femto f