Equations

Equations

1. Current

   • Charge=Q
     • Coulombs
   • Current=I
     • Amps
   • Time=t
     • Seconds
   • Current=charge/time

2. Voltage

   • Voltage=V
     • Volts
   • Current=I
     • Amps
   • Resistance=R (ohms)
   • Voltage=Current x resistance

3. Density

   • Density=p (rho, not p)
     • g/cm3 or kg/m3
   • Mass=m
     • kg
   • Volume=v
     • cm3 or m3
   • Density=mass/volume

4. Pressure

   • Pressure=p
     • Pa pr N/m2
   • Force=F
     • newtons (N)
   • Area=A
     • m2
   • Pressure=force/area

5. Weight

   • Weight=W
     • newtons (N)
   • Mass=m
     • kg
   • Gravitational field strength=g
     • N/kg
   • weight=mass x gravitational field strength