An electron (mass m, charge -e) is traveling through empty space at constant velocity ;=< v, 0,0>. After some time, it enters a region between two very large circular metal plates of radius R, exactly halfway between them as shown in the diagram. The top plate has charge +Q, the bottom plate has charge -Q, and they are separated by a distance d. F d/2 +Q Q

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A: Potential diffrance V=60v Potential energy U= 1.92×10^-17

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Q: and the cloud"? 3 Suppose that in a lightning flash the potential difference be- tween a cloud and…

A: The potential difference ∆V = 1×109 V Charge transferred q= 30 C

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.