Weight of drop of oil between two charged plates
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A drop of oil has a charge of 8x10^-19 Coulombs and is suspended between two parallel plates 8.0 mm apart and 1200V of uniform potential difference.
What is the weight of the oil drop?
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Solution Summary
Solution with equations, along with background information that is vital in figuring out how to solve the problem. General advice on how to solve physics questions is also included.
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Examine what information you're given:
Charge (q): 8x10^-19C
Distance between plates: 8.0mm = 8x10^-3m
Voltage = 1200V
Velocity/Acceleration: 0m/s and 0m/s^2, since the oil is suspended.
Now consider the question at hand: what is the mass of the drop of oil (m = ?)
In this scenario, we know that in order for the drop of oil to remain suspended, it must combat the effects of gravity, which would constantly be trying to pull it down. Since it's not moving, it means the force that is keeping it up, the electric force produced by the two plates (Fe), must be exactly equal in ...
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