Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 18 - Electric Currents - Questions: 5

Answer

An electrical ground is a sink that can direct excess charge away if necessary.

Work Step by Step

The negative/black terminal of the car battery is connected to the metal chassis. The positive/red terminal is then at 12 V with respect to that, i.e., the voltages used for electrical devices are measured with respect to the chassis, which is the "ground" for the circuits.
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