{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# lecture6 - Gausss Law(II Examples charged spherical shell...

This preview shows pages 1–6. Sign up to view the full content.

Gauss’s Law (II) •Examples: charged spherical shell, infinite plane, long straight wire Text sections 24.3 Practice problems: chapter 24, problems 23, 25, 29, 31, 63 Read section 24.3 carefully, including field of a line or cylinder. Gauss’s Law Gauss’s Law For a closed surface S: Net outward flux through S ο ε enclosed charge net =

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Calculating E for symmetric charge distributions Calculating E 1) Use symmetry to sketch the behaviour of E ( possible only for very symmetic distributions ) 2) Pick an imaginary “gaussian surface” S 3) Calculate the flux through S, in terms of an unknown | E | 4) Calculate the charge enclosed by S from geometry 5) Relate 3) and 4) by Gauss’s Law, solve for | E | Example: Uniformly Charged Sphere Example: ) ( constant volume unit charge a r < = = ρ Total charge Q a r + + + + + + + + + + + + + + + Find E for: i) r > a and ii) r < a E
P a r + + + + + + + + + + + + + + + E(r) E(r) E(r) E(r) A d r A d r i) r > a P a r + + + + + + + + + + + + + a) (r < = r a Q E total 3 4 ο π ii) r < a

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
For any spherically – symmetric charge: 2 4 ) ( ) ( r r Q r E ο πε = Where Q(r ) = charge enclosed within an

This preview has intentionally blurred sections. Sign up to view the full version.

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

{[ snackBarMessage ]}

### Page1 / 6

lecture6 - Gausss Law(II Examples charged spherical shell...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online