Ohm's Law & related equalities |
definitions: |
E is electrical voltage potential in volts.
I is the flow of electrons in amperes current flows from the point of highest potential (negative) to the point of lowest potential (positive) R is resistance to the flow of current in ohms. Z is impedance to the flow of alternating current in ohms. P is electrical power to do work in watts |
equations: |
I=E/R R=E/I E=I*R
I=E/Z Z=E/I E=I*Z P=E*I P=E**2/R(or Z) P=I**2*R(or Z) E = P/I I*R I*Z square root of (P*R) square root of (P*Z) I = P/E E/R E/Z square root of (P/R) square root of (P/Z) R = E/I Z = E/I P/I**2 P/I**2 E**2/P E**2/P P = E*I R*(I**2) Z*(I**2) E**2/R E**2/Z |