Physics Review Question

Unit: electricity and magnetism
Year: 1997 Question#: 24
Question: A distance of 1.0 x 103 m separates the charge at the bottom of a cloud and the ground. The electric field intensity between the bottom of the cloud and the ground is 2.0 x 104 newtons per coulomb. What is the potential difference between the bottom of the cloud and the ground?

(1 ) 1.3 x 1023 V
(2 ) 2.0 x 101 V
(3 ) 2.0 x 107 V
(4 ) 5.0 x 10-2 V

What is this question really asking?


Explanation by: Dana H

[ Return to question menu ]













Answer 1
1.3 x 1023 V

INCORRECT Incorrect, the equation is E=V/d, so one has to multiply the distance and the electric field intensity. return to top























Answer 2
2.0 x 101 V

INCORRECT When you multiply the distance and the electric field intensity you do not get 2.0 x 101 V. return to top



























Answer 3
2.0 x 107 V Correct, E=V/d, when the distance and the electric field intensity are multiplied, 2.0 x 107 V is correct. return to top


























Answer 4
5.0 x 10-2 V INCORRECT Try the formula E=V/d. return to top


























What's this question really asking?
Between the bottom of the cloud and the and the ground the potential difference is what?
return to top

[Home]  [Lessons]  [Review]  [Search]  [Links]

This web site is designed and maintained by Science Joy Wagon and may not be reproduced or redistributed without written permission from Science Joy Wagon.
Contact with comments.