# Category: faradays law of induction #### A metal ring is dropped into a localized region of constant magnetic field, as indicated in the figure (Figure 1) . The magnetic field is zero above and below the region where it is finite. For each of the three indicated locations (1, 2, and 3), is the magnetic force exerted on the ring upward, downward, or zero? Where would each of ther numbers (1, 2, and 3) be placed if given the bins upward, downward, and zero?

A metal ring is dropped into a localized region of constant magnetic field, as indicated in the figure (Figure 1) ... #### Problem 6.3 A coil consists of 100 turns of wire wrapped around a square frame of sides 0.25 m. The coil is centered at the origin with each of its sides parallel to the x- or y-axis. Find the induced emf across the open-circuited ends of the coil if the magnetic field is given by (a) B=zˆ20e−3t (T) (b) B = zˆ 20cosx cos103t (T) (c) B = zˆ 20cosx sin2y cos103t (T)

Problem 6.3 A coil consists of 100 turns of wire wrapped around a square frame of sides 0.25 m. The ...