As we’ve seen, protons have an inherent magnetic moment, which has been measured to be 1.4 x 10-26 A • m2. What would be the torque on a proton whose moment was oriented at 90° to a 1.2 T magnetic field?

Chapter 29: Magnetic Fields We studied how a moving charge would react in a magnetic field, which extends naturally to current where charges drift (hence moves) in a magnetic field. One special case of this is the torque due to current loops in magnetic fields: 7= μx B= IAX B since we defined the magnetic moment of a current loop as μ = IĀ. estimate the current that an electric car would have to provide to its motor such that it can do 0-100 kph in 3 seconds. Some useful hints for guidance are below: (1) . Find the acceleration using kinematics With the acceleration, what would be the torque needed for the motor to apply to the wheel? You need to estimate yourself the size of the wheel, as well as the size of the motor hub that is connected to the wheel. A simple electric motor has a permanent magnet, say of strength of 1 Tesla, and a coil acting as many current loops. You need to estimate the number of loops, you can google it just come up with a reasonable number. ● From this and…

An electron is placed in a magnetic field B that is directed along a z axis. The energy difference between parallel and antiparallel alignments of the z component of the electron's spin magnetic moment with B is 5.30 x 10-25 J. What is the magnitude of B ? Number i Units

How the Biot-Savart Law Differs from Ampère's Law A current Io flows up the z-axis from z = z, to z = 22 as shown below. %3D Z2 (a) Use the Biot-Savart law to show that the magnetic field in the z = 0 plane is Ho lo {cos 02 – cos 01}6. 4π ρ B(p, 6, 0) = |