# Potential difference in two points, particle charge, lightning discharge, electron, speed

Please show all work and show all equations used and diagrams.

1) If 500J of work are required to carry a 40C charge from one point to another the potential difference between these two points is:

3) The potential difference between two points is 100V. If a particle with a charge of 2C is transported from one of these points to the other, the magnitude of the work done is:

4) During a lightning discharge, 30C of charge moves through a potential difference of 1.0*10^8V in 2.0*10^-2sec. The energy released by the lightning bolt is:

5) An electron is accelerated from rest through a potential difference V. Its final speed is proportional to: (and why)

a) V

b) v^2

c) SQRTV

d)1/V

e) 1/SQRTV

https://brainmass.com/physics/energy/potential-difference-particle-change-lightning-discharge-43461

#### Solution Preview

1)

W=(1/2)Q*V =>500=(1/2)40*V => V=250 ...

#### Solution Summary

The solution shows the formulas and computations to arrive regarding potential difference.