Phys 212 by Christelle Seri https://padlet.com/christouseri/2zy53ovefi9e Made with a lightning strike of genius en-us 2019-09-13 02:52:32 UTC 2024-07-12 10:53:40 UTC hello@padlet.com On Cubes christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/383603302 Why no Gauss?]]> 2019-09-13 02:53:33 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/383603302 On Charge Densities christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/383603373 Why can you actively add/subtract them together? Why doesn't distance factor in?]]> 2019-09-13 02:53:56 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/383603373 On Electric Potential christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/383603546 What's the difference between physics electric potential and electrical voltage? Also what about potential energy and potential?]]> 2019-09-13 02:55:02 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/383603546 On Cubes (explained) christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/383990329  For Gauss' Law to be useful, the electric field must be both:
  1. Constant in magnitude at all points on the surface area. 
  2. Constant in angle to the surface.
With a cube with enclosed charge q, the electric field lines are as pictured below. Notice how through one side of the cube, the electric field lines are oriented at different angles. Therefore cubes do not follow the second requirement and Gauss' Law is not generally useful for this geometry.
]]> 2019-09-13 20:20:52 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/383990329 On Charge Densities (explained) christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/383993039 For infinite sheets, the charge densities can be superimposed mostly because as a consequence of Gauss' Law, the electric fields are constant and reliant only on the charge densities. I.e.:

E=\frac{q}{2\varepsilon _{0}}
     (for infinite sheets of charge)

For an infinite cylinder, the reason linear charge densities can be superimposed is due to the property of the density. Linear charge density is measured along the length of the cylinder. So at a cross-sectional level, the linear densities can be superimposed because length does not change. The right hand side of the gif illustrates this property.

]]> 2019-09-13 20:30:44 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/383993039 Studying christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/383998790 Try answering the posts in the why column without looking at the breakdown.]]> 2019-09-13 20:52:56 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/383998790 On Dielectrics/Conductors and Capacitors christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/389206666 2019-09-25 02:05:10 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/389206666 Equipotential Lines christouseri https://padlet.com/christouseri/2zy53ovefi9e/wish/389207682 Why does counting equipotential lines correlate to change in potential? I.e. if a points is three equipotential lines away from a point and another point is three equipotential lines from some other point, why is the potential in this situation the same? ]]> 2019-09-25 02:09:34 UTC https://padlet.com/christouseri/2zy53ovefi9e/wish/389207682