Online Ohm's Law calculator

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Ohm's Law calculator

Enter 2 values to get the other values and press the Calculate button:

Resistance (R):
Current (I):
Voltage (V):
Power (P):

Ohm's regulation estimation formula

The current I in amps (A) is equivalent to the voltage V in volts (V) partitioned by the opposition R in ohms (Ω):

I = V/R

Example

I = 20V/10ω = 2A

The power P in watts (W) is equivalent to the voltage V in volts (V) times the ongoing I in amps (A):

P = V × I

AC Ohm's law calculator

Enter 2 values of magnitude+phase angle to get the other values and press the Calculate button:

Impedance (Z):
°  = 
Current (I):
°    
Voltage (V):
°    
Power (S):
°  = 

AC Ohm's regulation estimation formula

The voltage V in volts (V) is eqaul to the ongoing I in amps (A) times the impedance Z in ohms (Ω):

V(V) = I(A) × Z(ω) = (|I|×|Z|) ∠ (θI + θZ)

The complex power S in volt-amps (VA):

S(VA) = (|V|×|I|) ∠ (θV - θI)



Online Electrical Calculators

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