An eight-turn coil n = encloses an elliptical area having a major axis of 40.0 cm and a minor axis of 30.0 cm (Fig. P29.49). The coil lies in the plane of the page and has a i = A current flowing clockwise around it. If the coil is in a uniform magnetic field of b = T directed toward the left of the page, what is the magnitude of the torque on the coil? Hint: The area of an ellipse is A 5 pab, where a and b are, respectively, the semimajor and semiminor axes of the ellipse.

a =
c =