quiz_solutions06

Fundamentals of Physics, (Chapters 21- 44) (Volume 2)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
PY212 Solutions Quiz 6 (a) The torque is given by B r r r × = μ τ and therefore the magnitude of the torque is equal to θ sin B = . Here θ is the angle between B r and the dipole moment r (which is a vector perpendicular to the plane of the loop; see Fig. 28-24). If the torque on the coil is maximized, we must have sin θ = 1, i.e. θ = 90 ° . (b) If N closed loops are formed from the wire of length L , the circumference of each loop is L / N , the radius of each loop is R = L /2 π N , and the area of each loop is
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online