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Back to Electric Potential — Problem 3 · Task Set 6

Exercises: Electric Potential

Work through each section in order. Show your work for all calculation problems. Pay attention to signs — they carry physical meaning.

Grade 11·21 problems·~30 min·OpenStax Physics (High School)·section·sec-18-4
Work through problems with immediate feedback
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Fluency Practice

1.

A point charge of q=−4.0 μCq = -4.0\ \mu\text{C} is fixed in space. What is the electric potential at a distance of r=0.20 mr = 0.20\ \text{m} from the charge? Use k=9.0×109 N⋅m2/C2k = 9.0 \times 10^9\ \text{N·m}^2/\text{C}^2.