Net electric field from multiple charges in 2D | Physics | Khan Academy


16 thoughts on “Net electric field from multiple charges in 2D | Physics | Khan Academy”

  1. MoogleEJA says:

    This is wonderful thank you! Reviewing the trig steps as you went a long was really helpful.

  2. Hen Halpert says:

    Wow! you are awesome! you are so thorough !

  3. Carabara731 says:

    Such a good explanation. Thank you

  4. Khayalami Mahlalela says:

    you just too good man. I appreciate this

  5. Vincent Ernst says:

    Nice, but honestly could have just multiplied Ex with the ratio 3/5 instead of doing the whole trig thing.

  6. Regrets_14 says:

    This was a really thorough and detailed explanation that leads to learning

  7. Aly says:

    This is beautiful

  8. S3RENITY says:

    This video was amazing. The small but ubiquitous edits were a great addition to the silky smooth drawing and writing of the work.

  9. Joel Colon says:

    BRUTAL! Thanks!!

  10. shuvro champ says:

    wonderfully explained…but we can do this in a different way as the magnitude of both the charges r the same…so we can put the mathmatical formula of electric dipole…
    E=K.p/r^3;p=dipole moment=q*d&r=4m as given…we can use this formula when the point in at the vertical area from the middle point of both charges…then theta=90
    the general formula is E=K*p/r^3*(1+3cos^2theta)

  11. Nischal Dahal says:

    Wish my damn professor would have taught me like this 🙁

  12. Katie Cross says:

    Could you consider this a dipole?

  13. 454 GM says:

    Slow down you understands it but I don’t 🙃

  14. Sol Oshyn says:

    I kinds wish there was an example of 3 or more charges but besides that, a fantastic explanation

  15. Isabella Durazo says:


  16. Huntergirl727 says:

    I wish this guy spoke a little more slowly and smoothly, like Sal does. This guy hurts my brain like a woodpecker.

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