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A physics question

cobalt60cobalt60 Registered User Posts: 17 New Member
Post edited by cobalt60 on

Replies to: A physics question

  • GurushastryGurushastry Registered User Posts: 24 New Member
    Hi
    By convention the direction of an electric field is in the direction AWAY from a positive charge (and TO a negative charge).

    The electric field in P caused by +Q alone is E to the right (since +Q is positive).

    when you add the -Q charge, you add an electric field equal in magnitude (E=KQ/r^2 - I guess you have to assume that P is exactly in the middle) in the direction TO it (the right side).

    Summing it all up you get a 2E electric field to the right side
    and thats the answer.
  • cobalt60cobalt60 Registered User Posts: 17 New Member
    thanks man :)
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