\[V=IR\]
Variables
Vvoltage (V)
Ielectric current (A)
Relectrical resistance (ohm)
Description
What is this formula?
This formula calculates the voltage across an electrical resistor from the current flowing through it and its resistance.
When to use it
Use it when analyzing direct current circuits or linear electrical components obeying Ohm law.
Example
Data:
I = 2 A
R = 15 ohm
Formula:
V = I*R
Substitution:
V = 2*15
Result:
V = 30 V
Applications
Electrical engineering, circuit analysis, electronics, power systems, instrumentation, and educational physics.