Conceptual Physics (12th Edition)

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

Chapter 22 - Think and Explain: 83

Answer

Their accelerations will be opposite in direction.

Work Step by Step

The electric force on a charge q in an electric field E is given by qE. The charges on a proton and electron are equal and opposite. The forces they experience in the same electric field are therefore also equal and opposite, so the electron and proton accelerate in opposite directions.
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