The Ohm's Law Pie Chart depicts the formulas for calculating any three electrical quantities. 2. Determine the external resistor required to reduce the line voltage from 120 V to 72 V for the operation of a device. The device is rated 120 V, 100W.

EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN:9781337516549
Author:Simmons
Publisher:Simmons
Chapter27: Service-entrance Equipment
Section: Chapter Questions
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1. The Ohm's Law Pie Chart depicts the formulas for calculating any three electrical quantities. 2. Determine the external resistor required to reduce the line voltage from 120 V to 72 V for the operation of a device. The device is rated 120 V, 100W.
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