Cancelling magnetic fields#
Two long wires, one of which has a semicircular bend of radius \(R\), are positioned as shown in the figure.
If both wires carry a current \(I\), how far apart must their parallel sections be so that the net magnetic field at P is zero?
In your symbolic expression, use pi to represent Ï.
What is the direction of the current in the straight wire on the right-hand side?
Towards the top of the screen
Towards the bottom of the screen
Problem is from the OpenStax University Physics Volume 2 textbook, licensed under the CC-BY 4.0 license.