You have a 1 kg particle carrying -1 C of charge. You'd like to suspend this particle above yo desk by placing a very large electrically charged plate above the charged particle. a. Should the plate be positively charged or negatively charged? b. How strong does the electric field need to be?
You have a 1 kg particle carrying -1 C of charge. You'd like to suspend this particle above yo desk by placing a very large electrically charged plate above the charged particle. a. Should the plate be positively charged or negatively charged? b. How strong does the electric field need to be?
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Transcribed Image Text:1. You have a 1 kg particle carrying -1 C of charge. You’d like to suspend this particle above your desk by placing a very large electrically charged plate above the charged particle.
a. Should the plate be positively charged or negatively charged?
b. How strong does the electric field need to be?
Expert Solution

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Solution:
a). The charge of -1C has to be suspended in the air. The charge also has a mass of 1 kg. Therefore, the force of gravity will pull the charge downward. To suspend the body in the air the electrostatic force must pull the charge up. Since the same charge repels each other. Therefore, to attract the negative charge positive plate must be placed.
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