Recent content by novelriver

I wasn't sure if I was right, so I was looking for a confirmation. Thank you!

Homework Statement Find the resistance for an incomplete circuit. Homework Equations V = IR The Attempt at a Solution The resistance would be infinite because no current can flow.

Right, I realized that I should have chose a different variable name than x. Thank you for your help! I appreciate it!

I just realized my mistake. It's the x-components that cancel, not the y. So E = kQ/r2 * sin(theta) = kQ/r2 * x/r = kQx/r3 and then multiply by 2 because there are two charges acting on P in the same direction. So E = 2kQx/r3.

I think I understand. E = kQ/r2 * cos(theta) because the y-components cancel out and we just want to get the x-component. I'll call the horizontal distance d (in a real problem it would be given or I could find it with trig), so cos(theta) = d/r. Therefore E = kQ/r2 * d/r = kQd/r3.

Thanks for your reply. I'll make sure to not delete the template next time. I think my E describes the magnitude of the electric field. After calculating the magnitude, I can decide if it's positive or negative. So in this case, E is negative, because E is going down, away from positive and...

Is this the correct equation to find the electric field at point p from a dipole?