JOURNAL OF MANAGEMENT POLICY AND PRACTICE
Ohm’s Law / Little’s Law: Expanding the Analogy
Author(s): Bill Roach
Citation: Bill Roach, (2011) "Ohm’s Law / Little’s Law: Expanding the Analogy," Journal of Management Policy and Practice, Vol. 12, Iss. 3, pp. 41 - 48
Article Type: Research paper
Publisher: North American Business Press
Abstract:
Sometimes analogies between diverse disciplines lead to important and useful results. Ford Whitman
Harris (1913) observed that inventory related costs were similar to the costs for transmitting electricity
as they were described by Kelvin’s Law(1881). Whitman’s analogy led him to formulate the Total Cost
function and the Economic Order Quantity (EOQ). This paper observes the analogy between Ohm’s Law
in electrical engineering and Little’s Law in queuing theory and attempts to explore that analogy. The
analogy is particularly intriguing because Little’s Law is at the heart of several metrics used in Balanced
Scorecard analysis developed by Kaplan and Norton (1992, 1996).