## Physics: Principles with Applications (7th Edition)

Published by Pearson

# 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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