Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 23 - Think and Explain - Page 449-450: 91

Answer

Less damage is done by plugging a 220-V hairdryer into a 110-volt supply outlet.

Work Step by Step

Damage is done when too much current is driven through the appliance. In a hairdryer, the resistance of the heating element is tailored to the expected supply voltage. Plugging a 110-V hairdryer into a 220-volt supply outlet will cause twice as much current to flow as the hairdryer is expected to handle. On the other hand, plugging a 220-V hairdryer into a 110-volt supply outlet means that only half as much current flows as normal, and no damage will be done.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.