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: 13

Answer

Simply replacing the 15-A fuse with a 25-A fuse allows more current to flow. The wires in the circuit are not designed for this kind of load, and they will get hotter than normal, possibly resulting in a fire or other damage.

Work Step by Step

There might be a “short circuit” or some fault causing the current to exceed 15 A. That’s why the 15-A fuse blows. The blown fuse is the canary in the coalmine, and you must track down what is wrong with the circuit.
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