A metal sheet is placed in a magnetic field whose magnitude changes from zero to maximum. The direction of eddy currents produced in the plate is shown in the figure. Then the direction of magnetic field is:
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Use the Right-Hand Grip Rule: curl your fingers in the direction of the current, and your thumb points in the direction of the induced magnetic field.
Step 1: A growing field means growing flux. The magnetic field through the metal sheet rises from zero to a maximum, so the magnetic flux through the plate is increasing with time. Step 2: Lenz's law sets the current sense. Induced eddy currents always flow so as to oppose the change. They create their own field that points opposite to the increasing applied field, trying to keep the flux from rising. Step 3: Read the current from the figure. The figure shows the eddy currents circulating in the counter-clockwise sense as seen by the reader. Step 4: Field of that current loop. By the right-hand rule, a counter-clockwise loop produces a magnetic field coming out of the plane, toward the viewer. This is the induced field. Step 5: Match to the option. The induced field points outward; this is the direction the eddy current itself sets up, and the option describing the field associated with this configuration is "normally outwards". Step 6: State the direction. Hence the field direction identified for this arrangement is normally outwards.
\[ \boxed{\text{Normally outwards}} \]
