   Chapter 16, Problem 4P

Chapter
Section
Textbook Problem

Cathode ray tubes (CRTs) used in old-style televisions have been replaced by modern LCD and LED screens. Part of the CRT included a set of accelerating plates separated by a distance of about 1.50 cm. If the potential difference across the plates was 25.0 kV, find the magnitude of the electric field in the region between the plates.

To determine
The electric field between the plates.

Explanation

Given info: Potential difference is 25.0 kV. The distance between the plates is 1.50 cm.

Explanation:

Formula to calculate the electric field between the plates is,

E=|ΔVΔx|

• Δx is the distance.
• ΔV is the potential difference.

Substitute 1.50 cm for Δx and 25.0 kV for ΔV

E=|25.0kV1

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