Try to compute the self-inductance of the “hairpin” loop shown in Fig. 7.38. (Neglect th...

Try to compute the self-inductance of the “hairpin” loop shown in Fig. 7.38. (Neglect the contribution from the ends; most of the flux comes from the long straight section.) You’ll run into a snag that is characteristic of many selfinductance calculations. To get a definite answer, assume the wire has a tiny radius , and ignore any flux through the wire itself.