Answer
2.4 cm
Work Step by Step
Assume that the plates are large enough that the electric field is uniform. Use equation 17–4b to find the separation.
$$|E|=\frac{V_{ba}}{d}$$
$$d=\frac{V_{ba}}{|E|}=\frac{45V}{1900V/m}=2.4\times10^{-2}m$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.