(#615112) {Electric Potential} Calculate the sign and magnitude of a point charge that produces an electric potential of

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615112 Electric Potential Calculate The Sign And Magnitude Of A Point Charge That Produces An Electric Potential Of 1 (31.41 KiB) Viewed 45 times

Please help me answer question 1) A-B. Thank you inadvance
(#615112) {Electric Potential} Calculate the sign and magnitude of a point charge that produces an electric potential of -2.00 V at a distance of 1.00 mm. Give your answer in units of Coulombs. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here
(#280043) {Electric Potential} A 1.00 cm diameter plastic sphere, used in a static electricity demonstration, has a charge of 25.8 pC uniformly distributed on its surface. What is the potential near its surface? Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here 10368 V