Lightning is a spectacular example of electric current in a natural phenomenon. There is much variability to lightning bolts, but a typical event can transfer 10^9 J of energy across a potential difference of perhaps 5 x 10^7 V during a time interval of about 0.2 s. Use this information to estimate (a) the total amount of charge transferred between cloud and ground (b) the current in the lightning bolt (c) the average power delivered over the 0.2 s.

Measurements made during severe electrical storms reveal that lightning bolts can carry as much as 30 C of charge and can travel between a cloud and the ground in time intervals of around 100 μs (and sometimes even shorter). Potential differences have been measured as high as 400 million volts. 1)What is the current in such a lightning strike? (Express your answer to two significant figures.) 2)What is the resistance of the air during such a strike? (Express your answer to two significant figures.) 3)How much energy is transferred during a severe strike? (Express your answer to two significant figures.) 4)What mass of water at 100∘C could the lightning bolt in part (3) evaporate? The latent heat of vaporization of water at 100∘C is LV=2260 kJ/kg. (Express your answer to two significant figures.)

In a linear particle accelerator electrons are accelerated from rest to a speed of approximately the speed of light (3 x 108 m/s). If point A is the initial position of the electrons in the machine and point B is the position at which they reach their final speed, what is the electrical potential difference VA - VB in MV?

Question 9 of 22 During a lightning storm, a lighting bolt causes 100 C of charge to move through a potential difference of 5 x 105 V. If the power associated with the lightening strike is 4 x 108 W, how long did the strike last? 0.350 s 0.125 s 100 s 0.023 s None of the above