Calculate the resistance using Voltage and current, again using voltage and power, again using current and power, and again using R1 and R2 recording the calculations for Run 3 rows 41-56

R = V / I ,   R = V² / P,     R = P / I²

Explanation:

For this exercise let's use ohm's law

      V = I R

      R = V / I

Electric power is defined by

      P = V I

ohm's law

      I = V / R

we substitute

      P = V (V / R)

      P = V² / R

      R = V² / P

the third way of calculation

      P = (i R) I

      P = R I²

      R = P / I²

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