- Published in issue 9/2005 on page 0
Ohm’s Law Wheel
Has Ohm’s Law got you going round in circles? Take a look at the wheel shown here and rotate no more. All derivations of Ohm’s Law are arranged in one, simple to read chart. Simply select the desired unknown (V, I, R or P) from the inner circle of the wheel, then scan its quarter of the outer circle for one of the three equations that applies.