Question 1
The magnetic moment of an electron (charge = −e; mass = me) moving in a circular orbit of radius r with speed v about a nucleus of mass mN is proportional to
◦ r.
◦ v.
◦ vr.
◦ evr.
◦ mNvr.
Question 2
The segment of wire (total length = 6
R, including the incoming and outgoing portions of the wire) is formed into the shape shown and carries a current
I. What is the magnitude of the resulting magnetic field at the point P?
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