C A B D

A stationary square coil of area A is brought into the magnetic field B with its plane perpendicular to the magnetic field. The coil has N turns. Write down the expression for the net magnetic field flux D through the coil. Please use "*" for products (e.g. B*A), "/" for ratios (e.g. B/A) and the usual "+" and "-" signs as appropriate. Please use the "Display response" button to check you entered the answer you expect. Dicplauurocnonco

Shown in the following figure is a long, straight wire and a single-turn rectangular loop, both of which lie in the plane of the page. The wire is parallel to the long sides of the loop and is 0.50 m away from the closer side. At an instant when the emf induced in the loop is 8.3 V, what is the time rate of change of the current in the wire (in A/s)? (Enter the magnitude.) 0.50 m 0.50 m 3.0 m A/s

A set of three conducting rings are hung from a ceiling as shown in the Figure and are in the same magnetic field B. The magnetic field is uniform and remains constant with respect to time. Ring 1 moves left and right as indicated, like a mass attached to a pendulum. Ring 2 rotates about a vertical axis, and Ring 3 moves up and down while attached to a spring. Which ring(s) will have an emf induced in them? 1 2 3. O Ring 3 only O Ring 2 only O Ring 1 only O Rings 2 and 3 Rings 1 and 2