Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Nali Group Title

When is Emf= vBl negative like (Emf=- vBl ) and when is it positive?

  • 6 months ago
  • 6 months ago

  • This Question is Closed
  1. theEric Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html The emf would be negative if the vector \(\vec v\times\vec B\) is negative. It depends on your coordinate system, how you allocate the signs. But you can always look at the velocity and magnetic field vectors. In this drawing, the current will be out of the screen.|dw:1397363101158:dw| Swap the vectors, and it will be into the screen. Check out the right hand rule! :)

    • 6 months ago
  2. Nali Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks!

    • 6 months ago
  3. theEric Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You're welcome! When I answered this, I was in a rush. Let me know if you have any questions!

    • 6 months ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.