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Field and Potential

Part of the Electricity and Magnetism section of Coddy's Physics journey. Lesson 12 of 51.

In a uniform field, between plates a distance d apart with a voltage V across them:

E = V / d

1 V/m = 1 N/C.

Equipotentials across a uniform field

The field points from high to low potential. Equipotentials cross the field at right angles; moving a charge along one takes no work.

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Challenge

Two parallel plates 0.05 m apart are connected to 200 V. How big is the electric force F on an electron between them?

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