Question

An electron moving parallel to a uniform electric field increases its speed from 2.0 × 10^7 m/s to 4.0 × 10^7 m/s over a distance of 2.0 cm.

What is the electric field strength?

Express your answer with the appropriate units.

Step 1

Write the expression of velocity as a function of position.

Step 2

The formula for the electric force due to the electric field on the electron is:

Step 3

From Newton’s seco...

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