M5.1  Linear Currents

M5.2  Wire Next to a Loop

M5.3  Field at Center of Square

M5.4  Field at Center of Triangle

D5.1  Parallel Linear Currents

D5.2  Antiparallel Linear Currents

		Problem 5.5:	Magnetic force on current-carrying wire
		Problem 5.19:	Force on a current loop
		Problem 5.25:	Vector magnetic potential
		Problem 5.33:	Boundary conditions