25. Electric Potential

Work From Electric Force

Work by the Electric Field

A particle with charge +4.20 nC is in a uniform electric field E directed to the left. The charge is released from rest and moves to the left; after it has moved 6.00 cm, its kinetic energy is +2.20x10^-6 J. What is (a) the work done by the electric force?

(a) B (b) 1.6 × 10-17 J (c) 5.95 × 106 m/s

(a) B (b) -1.6 × 10-17 J (c) 5.95 × 106 m/s

(a) A (b) 1.6 × 10-17 J (c) 5.95 × 106 m/s

(a) A (b) -1.6 × 10-17 J (c) 5.95 × 106 m/s

An electron moves from point A to point B. The potential difference between these two points is 100 V. What is&nbsp;a. the point of higher potential? b. the work done on the electron? c. the final speed of the electron if its initial speed is zero?

Work due to Electric Force

Speed of Electron in Electric Field

How much work does a <math display='inline'><mrow><mn>12</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">V</mi></mrow></math> battery do when it moves <math display='inline'><mrow><mn>2.4</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">C</mi></mrow></math> from the negative terminal to the positive terminal?

What is the speed of a proton that has been accelerated through <math display=“inline”><mrow><mn>2300</mn><mtext>&#x00A0;</mtext><mi mathvariant="normal">V</mi></mrow></math>?

What work is needed to assemble an equilateral triangle of side length 5 cm, with a 5µC charge at each vertex?<img src="https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/images/c0a10740"alt=""/>

8.02x - Lect 4 - Electrostatic Potential, Electric Energy, Equipotential Surfaces

Electric Potential Energy and Potential Difference

Work to Bring Two Charges From Infinity

A point charge q_1=+2.40 μC is held stationary at the origin. A second point charge q_2=-4.30 μC moves from the point x=0.150 m, y=0 to the point x=0.250 m, y=0.250 m. How much work is done by the electric force on q_2?

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