Cracking the SAT Physics Subject Test

(Marvins-Underground-K-12) #1

Finally, notice that electric field lines never cross.



  1. A charge q = +3.0 nC is placed at a location at which the
    electric field strength is 400 N/C. Find the force felt by the charge q.


Here’s How to Crack It


From the definition of the electric field, we have the following equation:


Fon q = qE
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