This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: E , at the location of a test particle with a small charge q to be q F E q ← ≡ . The test charge q is defined such that it doesn’t disturb the original charge distribution associated with the electric field. The SI units for electric fields are N/C. The electric field of any charge distribution is a vector field. Consider a single particle with charge q (below). Since the magnitude of the force on a test charge > q due to q is 2 4 1 r q q F q ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ = ← πε . The magnitude of the electric field, due to q , at the location of the test charge q , which is some distance r from q , is 2 4 1 r q E ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ = . Note that this does not depend on q . Like electrostatic force, the electric field obeys the principle of superposition. For a distribution of n charges n E E E E + + + = L 2 1 total , where i E is the electric field due to the i th charge....
View
Full
Document
This note was uploaded on 05/15/2008 for the course PHYS 2208 taught by Professor Fulbright, r during the Spring '07 term at Cornell.
 Spring '07
 FULBRIGHT, R
 Physics, Charge

Click to edit the document details