[SOLVED] Physics 311 Homework Set 10

1. Find the magnetic field at the center of a square loop, which carries a steady current I.
Let R be the distance from center to side (see Fig. 5.22)2. Find the magnetic field at point P for each of the steady current configurations shown in
Fig. 5.23.3. a) Find the force on a square loop placed as shown in Fig. 5.24 (a), near an infinite straight
wire. Let the loop carry a steady current I` and the wire carry a steady current Iw.b) Find the force on a triangular loop placed as shown in Fig. 5.24 (b), near an infinite
straight wire. Let the loop carry a steady current I` and the wire carry a steady current
Iw.4. a) Find the magnetic field at point P on the axis of a tightly wound solenoid (helical coil)
consisting of n turns per unit length wrapped around a cylindrical tube of radius a and
carrying current I (Fig. 5.25). Express your answer in terms of 1 and 2. Consider
the turns to be essentially circular, and use the result of Ex. 5.6.b) Now take the limit as the solenoid becomes infinite in both directions and find the field
on the axis.