Lenz's Law

The diagram shows a magnet entering a solenoid.

An iron bar has been placed in the solenoid to show how the wires curl in the solenoid.

In what direction will the induced current flow in?

• From A to B

• From B to A

• No induced current will be flowing in the circuit.

• There is insufficient information to determine the direction of current flow.

The diagram shows a magnet entering a solenoid.

An iron bar has been placed in the solenoid to show how the wires curl in the solenoid.

There will be an induced current in the circuit due to this magnet entering the solenoid, causing an electromagnet to form.

In which direction will the north pole of the electromagnet be pointed?

• Downwards

• Leftwards

• Rightwards

• Upwards

The diagram shows a magnet leaving a solenoid.

An iron bar has been placed in the solenoid to show how the wires curl in the solenoid.

In what direction will the induced current flow in?

• From A to B

• From B to A

• No induced current will be flowing in the circuit.

• There is insufficient information to determine the direction of current flow.

The diagram shows a magnet leaving a solenoid.

An iron bar has been placed in the solenoid to show how the wires curl in the solenoid.

In which direction will the north pole of the electromagnet be pointed?

• Downwards

• Leftwards

• Rightwards

• Upwards

The diagram shows a magnet moving in a solenoid.

In what direction will the induced current flow in?

• From A to B

• From B to A

• No induced current will be flowing in the circuit.

• There is insufficient information to determine the direction of current flow.