<Dd> I = V R or V = I R or R = V I . (\ displaystyle I = (\ frac (V) (R)) \ quad (\ text (or)) \ quad V = IR \ quad (\ text (or)) \ quad R = (\ frac (V) (I)).) </Dd> <P> Each equation is quoted by some sources as the defining relationship of Ohm's law, or all three are quoted, or derived from a proportional form, or even just the two that do not correspond to Ohm's original statement may sometimes be given . </P> <P> The interchangeability of the equation may be represented by a triangle, where V (voltage) is placed on the top section, the I (current) is placed to the left section, and the R (resistance) is placed to the right . The line that divides the left and right sections indicate multiplication, and the divider between the top and bottom sections indicates division (hence the division bar). </P> <P> Resistors are circuit elements that impede the passage of electric charge in agreement with Ohm's law, and are designed to have a specific resistance value R. In a schematic diagram the resistor is shown as a zig - zag symbol . An element (resistor or conductor) that behaves according to Ohm's law over some operating range is referred to as an ohmic device (or an ohmic resistor) because Ohm's law and a single value for the resistance suffice to describe the behavior of the device over that range . </P>

What is the equation for ohm’s law