A 30.0 uC charge is moved 5.00 m West in an electric field of 4000 V/m pointing 40.0° North of East. What potential difference did the charge move through?

20000sin(40) V

Explanation:

Consider component to the east of electric field:

The charge move along this component for 5 meter

Potential difference:

= 12900 V (corr, to 3 sig,fig.)

this is an example of "committed" time.

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