The figure below shows a ring whose plane is perpendicular to your screen (the dashed parts are behind the screen and the solid parts are in front of the screen). A bar magnet is moved away from the ring in the direction show with vM .   Choose the correct direction for external flux through the ring (\PhiΦ), the change in external flux through the ring (\Delta\PhiΔΦ) and the direction of the induced magnetic field (B_{ind}Bind​) caused by the current induced in the ring.   a.Φ: right \Delta\PhiΔΦ: increasing (or pointing right) B_{ind}Bind​: right B.\PhiΦ: right \Delta\PhiΔΦ: increasing (or pointing right) B_{ind}Bind​: left C.\PhiΦ: right \Delta\PhiΔΦ: decreasing (or pointing left) B_{ind}Bind​: right D.\PhiΦ: left \Delta\PhiΔΦ: decreasing (or pointing right) B_{ind}Bind​: right E.\PhiΦ: left \Delta\PhiΔΦ: decreasing (or pointing right) B_{ind}Bind​: left F\PhiΦ: right \Delta\PhiΔΦ: decreasing (or pointing left) B_{ind}Bind​: left

Following conventional current flow, what would be the direction of the induced magnetic field and the direction of the current for the two situations, a) right after the switch is closed b) the switch has been closed for a long time and now right after the switch has been opened? See figure below. The figure on the left is a battery connected to a coil. The figure on the right is a coil connected to an amp meter. Determine which direction the amp meter shows current for each situation.

(a) Find the magnetic field at the center of a square loop, which carries a steady current I. Let R be the distance from center to side. (b) Find the magnetic field at point P for the steady current configurations shown in the Figure below. R

A loop of wire in the shape of a rectangle of width w and length L and a long, straight wire carrying a current I lie on a tabletop as shown in the figure below. (a) Determine the magnetic flux through the loop due to the current I. (Use any variable stated above along with the following as necessary: Mo.) ФВ (b) Suppose the current is changing with time according to I = a + bt, where a and b are constants. Determine the magnitude of the emf (in V) that is induced in the loop if b = 20.0 A/s, h = 1.00 cm, w = 20.0 cm, and L = 1.20 m. v (c) What is the direction of the induced current in the rectangle? O clockwise O counterclockwise O The magnitude is zero. What If? Suppose a constant current of I = 6.00 A flows in the straight wire and the loop moves from an initial position ho = 1.00 cm toward the bottom of the figure at a constant speed of v = 16.0 cm/s. (d) What is the magnitude of the induced emf (in V) in the loop 1.00 s after it begins to move? V (e) What is the direction of the…