1 / 8

Coulomb’s Law

Coulomb’s Law. Electric Force. Symbol: F el Definition: the attractive or repulsive force between any 2 charged objects. Coulomb’s Law. Used to determine the force of the charge between two objects.

larya
Download Presentation

Coulomb’s Law

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Coulomb’s Law

  2. Electric Force Symbol: Fel Definition: the attractive or repulsive force between any 2 charged objects.

  3. Coulomb’s Law Used to determine the force of the charge between two objects. Coulomb found that the force is inversely proportional to the squared distance between the two objects F = 1 / d2 (look familiar!?!?!?)

  4. Coulomb’s Law Fel = K x q1 x q2 d2 Fel = force of electric charge (N) K = electrical constant (9.0 x 109 Nm2/C2 q = amt. of charge on object (measured in Coulombs, C) d = distance between objects (meters) Answer is (-) when force is attractive Answer is (+) when force is repulsive

  5. Inverse Square Law • Fel is proportional to 1/d2 • Ex. double distance • Fel’ = 1/ (2)2 = ¼ Fel • Ex. cut distance in ½ • Fel’ = 1/ (1/2)2 = 1/(1/4) = 4 Fel

  6. Practice • Cut the distance by 1/3 • Fel increases by 9 times

  7. Coulomb • Unit of charge • 1C = 6.25 x 1018 e- • A bolt of lightening transfers 1-20 Coulmbs

  8. Coulomb’s Law • Find Fel: • 3.46 x 10-4 N 2 m q = 4.80 x 10-7 C q = 3.20 x 10-7 C

More Related