Consider a current-carrying wire of length L carrying a current of magnitude I from left to right.
Question:
Consider a current-carrying wire of length L carrying a current of magnitude I from left to right. What is the magnetic field contribution dB? at point P, with coordinates (x,y), due to the current element dl? at point A, with coordinates (a,0)? Assume that y is positive.
IDENTIFY the relevant concepts
In this problem, you are asked to find the magnetic field contribution from a given current element. This may be calculated straightforwardly using the Biot-Savart law, as outlined in the strategy above. In other problems that ask for the total magnetic field, you will need to integrate over all such current elements to find the total field at point P.
Part A
In the figure, draw the vector representing the current element dl? and the unit vector r^. The vectors should be in the correct positions relative to the current element and with the correct directions, but their magnitudes are not important.
Will post remaining as other parts as the parts do not show up at the moment.
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson