- Resistance (R) -measured in Ohms (Ω)
- Voltage (V) -measured in Volts (V)
- Current (I) -measured in Amperes (A)
- Power (P) -Measured in Watts (W)
You choose the variable you wish to calculate, go to it's respective quadrant and select the formula that uses the values you already know: voilà, you get your answer!