Recent content by maccha

For integrating over type 1 and type 2 regions, why does the g(x) or g(y) bound have to be the inner integral? Thanks!

thought I understood equations of planes in R3 and their intersections, but apparently not. I'm very confused by what seems to be a basic problem: find a vector equation for the line of intersection of x + y + z= 0 and x + z = 0. Is x + z= 0 still a plane even though it doesn't have the...

When you're trying to find the magnetic field inside a current carrying wire using Ampere's Law, how do you know that the magnetic field inside also displays cylindrical symmetry?

Ohh that just clarified things for Gauss's Law too! Thank you!

I can't seem to understand why a current outside of a loop doesn't contribute in Ampere's Law? Any clarification would be appreciated.

Recently in physics I've learned that equipotential surfaces are always conductors in electrostatic equilibrium.. so no moving charges. I'm a little confused, then, of how a wire carrying current is considered an equipotential? If charges are moving how can the potential be constant?

Recently in physics I've learned that equipotential surfaces are always conductors in electrostatic equilibrium.. so no moving charges. I'm a little confused, then, of how a wire carrying current is considered an equipotential? If charges are moving how can the potential be constant?

So I'm learning about how applied electric field causes current in a wire.. I'm confused about one thing. If you have a wire connected to a battery.. and let's say for the first "half" of the circuit the wire is made of copper and the second half is the wire is made of gold... will the electric...

What stops current from flowing through the grounding wire? How come it can flow through once another part of the circuit breaks?

Yeah I know I'm just asking hypothetically?

Something like this: http://www.gcsescience.com/Switches-Lamps-Parallel-Circuit.gif if all other switches are closed but S4 is open, current won't flow through the last resistor, right? I didn't understand why but someone explained that it is because current has nowhere to go. I don't...

I'm a little confused about current flow/switches in circuits. Let's say two resistors are connected in parallel to a battery- if there is a switch between the two resistors on the negative terminal side, and the switch is opened, current won't flow through the second resistor, right? If current...

Thank you so much for that explanation! I think I understand now!

My textbook says that electrons in a wire begin with electric potential energy- they are then accelerated by the electric field and their potential is converted to kinetic. Once inside a resistor, they collide with molecules and their kinetic energy is converted to thermal energy. However, it...

Okay thanks for the reply. I still don't really understand why they wouldn't lose their potential energy even if there wasn't resistance.. Like when you have a positive charge and a negative charge, once they come together the potential energy of the system is zero. If an electron is leaving the...