Throughaloopchangesan b change the b field change a

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: s passing through the surface There are many ways to change this… There Physics 212 Lecture 17, Slide 5 Physics 212 Lecture 17, Slide Faraday’s Law: dΦ B emf = ∫ E ⋅ d = − dt where Φ B ≡ ∫ B ⋅ dA In Practical Words: 1) When the flux ΦB through a loop changes, an emf is induced in the loop. through a loop changes, an B Change the B field Change A Physics 212 Lecture 17, Slide 6 Physics 212 Lecture 17, Slide Faraday’s Law: dΦ B emf = ∫ E ⋅ d = − dt where Φ B ≡ ∫ B ⋅ dA In Practical Words: 1) When the flux ΦB through a loop changes, an emf is induced in the loop. through a loop changes, an B Move loop to a place where Move the B field is different the A Physics 212 Lecture 17, Slide 7 Physics 212 Lecture 17, Slide Faraday’s Law: dΦ B emf = ∫ E ⋅ d = − dt where Φ B ≡ ∫ B ⋅ dA In Practical Words: 1) When the flux ΦB through a loop changes, an emf is induced in the loop. through a loop changes, an B Rotate the loop A Physics 212 Lecture 17, Slide 8 Physics 212 Lecture 17, Slide Faraday’s Law: dΦ B emf = ∫ E ⋅ d = − dt where Φ B ≡ B ⋅ dA In Practical Words: 1) When the flux ΦB through a loop changes, an emf is induced in the loop. 1) When the flux through a loop changes, an B Rotate the loop A Physics 212 Lecture 17, Slide 9 Physics 212 Lecture 17, Slide Faraday’s Law: dΦ B emf = ∫ E ⋅ d = − dt where Φ B ≡ ∫ B ⋅ dA In Practical Words: 1) When the flux ΦB through a loop changes, an emf is induced in the loop. through a loop changes, an B Rotate the loop A Physics 212 Lecture 17, Slide 10 Physics 212 Lecture 17, Slide Faraday’s Law: dΦ B emf = ∫ E ⋅ d = − dt where Φ B ≡ ∫ B ⋅ dA In Practical Words: 1) When the flux ΦB through a loop changes, an emf is induced in the loop. through a loop changes, an 2) The emf will make a current flow if it can (like a battery). I Physics 212 Lecture 17, Slide 11 Physics 212 Lecture 17, Slide Checkpoint 1a A copper loop is placed in a uniform magnetic field as shown. You a...
View Full Document

This note was uploaded on 04/14/2013 for the course PHYS 212 taught by Professor Selen during the Spring '08 term at University of Illinois at Urbana–Champaign.

Ask a homework question - tutors are online