A magnetic field into the page through a loop is increasing. What direction is the induced current?

A magnetic field out of the page through a loop is decreasing. What direction is the induced current?

A magnetic field into the page through a loop is decreasing. What direction is the induced current?

A magnetic field out of the page through a loop is increasing. What direction is the induced current?

A north pole of a magnet approaches a conducting loop. What magnetic pole does the near face of the loop become?

A north pole of a magnet moves away from a conducting loop. What magnetic pole does the near face of the loop become?

A loop is pulled out of a region where the magnetic field is into the page. What field direction does the induced current produce?

A loop is pushed into a region where the magnetic field is into the page. What field direction does the induced current produce?

Explain why Lenz's law says the induced current opposes the change in flux rather than always opposing the magnetic field.

A loop lies in the page. A field into the page increases. Use Lenz's law and the right-hand rule to determine the current direction step by step.

A conducting ring falls toward a region of stronger upward magnetic field. What direction is the magnetic force on the ring?

A metal plate moves into a magnetic field region. Explain why the magnetic force acts as a drag force.

A loop has clockwise induced current. What direction is the induced magnetic field at its center?

A loop has counterclockwise induced current. What direction is the induced magnetic field at its center?

A student says an induced current can speed up the motion that caused it. Use energy conservation to explain why this is wrong for a passive circuit.

A rectangular loop is pulled to the right out of a region with field out of the page. Determine the induced current direction.

A rectangular loop is pushed to the right into a region with field out of the page. Determine the induced current direction.

A coil connected to a resistor has its flux increased by an external agent. What happens to the mechanical work done by the agent?

A conducting loop is above a solenoid. The solenoid current is increasing upward-field flux through the loop. What direction should the loop current be when viewed from above?

A loop's positive area normal is chosen out of the page. The magnetic flux is negative and becoming more negative. Determine the sign of the induced emf and interpret the current direction.