Equations Flashcards
Voltage (V) = ?
Voltage (V) = Work Done (J) / Charge (C)
Current (A) = ?
Current (A) = Charge (C) / Time (s)
Voltage (V) = ?
Current x Resistance ( V = IR)
Total Resistance in series?
R1 + R2
Total resistance in parallel
1/Rtotal = 1/R1 + 1/R2
Transformer equation
Number of turns in primary coil (Np)/Number of turns in secondary coil (Ns) = Voltage in primary coil (Vp) / Voltage in secondary coil (Vs)
Power = ?
Voltage x Current
Energy transfer =
Power x Time
Speed =
Distance/time
Acceleration =
Change in velocity/time
Momentum =
Mass x velocity
Force=
Mass x acceleration
Force (N) =
Force (N) = change in momntum(kg m/s) / change in time (s)
Work done (J) =
Work done (J) = Force (N) x Distance (m)
Power =
Power = energy (J) / time (s)
KE=
1/2 mv^2
Potential energy =
Potential energy = mass x acceleration due to gravity x height
Density =
Mass/volume
Energy (specific heat) =
Energy = mass x specific heat capacity x Temperature change
Percentage efficiency =
Useful output/total input x100%
Time period =
1/frequency
Velocity =
Frequency x wavelength
Angle of incidence =
Angle of reflection
