Electrical - Electronics, Ohm's Law, Formulas - Equations

Ohms Law

OHM'S LAW CALCULATOR

VOLTS=Voltage, AMPS=Current, OHMS=Resistance, WATTS=Power

Give me any TWO numeric values and I'll give you all FOUR. Press the Ohm's Law button after you have made your entries:
VOLTSAMPSOHMSWATTS


Philo Vineyard Solutions --- Grapevine Wireless

FORMULAS, EQUATIONS and LAWS


 
Symbolic:

E =VOLTS ~or~ (V = VOLTS)
P =WATTS ~or~ (W = WATTS)
R = OHMS ~or~ (R = RESISTANCE)
I =AMPERES ~or~ (A = AMPERES)
HP = HORSEPOWER
PF = POWER FACTOR
kW = KILOWATTS
kWh = KILOWATT HOUR
VA = VOLT-AMPERES
kVA = KILOVOLT-AMPERES
C = CAPACITANCE
EFF = EFFICIENCY (expressed as a decimal)

 
DIRECT CURRENT
  
AMPS=WATTS˜VOLTS I = P ˜ E A = W ˜ V
WATTS=VOLTS x AMPS P = E x IW = V x A
VOLTS=WATTS ˜ AMPS E = P ˜ IV = W ˜ A
HORSEPOWER=(V x A x EFF)˜746
EFFICIENCY=(746 x HP)˜(V x A)
 
AC SINGLE PHASE ~ 1¯
 
AMPS=WATTS˜(VOLTS x PF) I=P˜(E x PF)A=W˜(V x PF)
WATTS=VOLTS x AMPS x PF P=E x I x PFW=V x A x PF
VOLTS=WATTS˜AMPS E=P˜IV=W˜A
VOLT-AMPS=VOLTS x AMPS VA=E x IVA=V x A
HORSEPOWER=(V x A x EFF x PF)˜746
POWERFACTOR=INPUT WATTS˜(V x A)
EFFICIENCY=(746 x HP)˜(V x A x PF)
 
AC THREE PHASE ~ 3¯
 
AMPS=WATTS˜(1.732 x VOLTS x PF) I = P˜(1.732 x E x PF)
WATTS= 1.732 x VOLTS x AMPS x PF P = 1.732 x E x I x PF
VOLTS=WATTS˜AMPS E=P˜I
VOLT-AMPS=1.732 x VOLTS x AMPS VA=1.732 x E x I
HORSEPOWER=(1.732 x V x A x EFF x PF)˜746
POWERFACTOR=INPUT WATTS˜(1.732 x V x A)
EFFICIENCY=(746 x HP)˜(1.732 x V x A x PF)