A particle with a charge of ?1.6 ?C and a mass of 1.7 10-6 kg is released from r

Question

A particle with a charge of ?1.6 ?C and a mass of 1.7 10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 43 m/s. The only force acting on the particle is the electric force. Which point is at the higher potential? What is the potential difference VB ? VA between A and B? If the electric field inside a capacitor exceeds the dielectric strength of the dielectric between its plates, the dielectric will break down, discharging and ruining the capacitor. Thus, the dielectric strength is the maximum magnitude that the electric field can have without breakdown occurring. The dielectric strength of air is 3.0 106 V/m, and that of neoprene rubber is 1.2 107 V/m. A certain air-gap, parallel plate capacitor can store no more than 0.087 J of electrical energy before breaking down. How much energy can this capacitor store without breaking down after the gap between its plates is filled with neoprene rubber?

Explanation / Answer

2-(solution)-

pd (ie Volts = J/C) = energy transferred between AB / charge

Energy transferred to KE=

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