available because of matters of scale and complexity. 4.6.3.4 When a current flows through Describe how the 1 Use the hand grip rule’ to Demonstrate what ‘right a conducting wire a magnetic magnetic effect of a draw the magnetic field pattern happens when a foil field is produced around the current can be of a wire carrying an electric strip with a current wire. The shape of the demonstrated. current. flowing through it is magnetic field can be seen placed in a strong Use the hand grip WS 1.2, 3.1 as a series of concentric magnetic field. What rule’ to draw the Draw the magnetic pattern circles in a plane, happens if the direction magnetic field pattern for a straight wire carrying a perpendicular to the wire. of the current is of a wire carrying an current (showing the direction The direction of these field reversed? electric current. of the field). lines depends on the Try to demonstrate the direction of the current. WS 1.2 shape by placing a wire The strength of the magnetic through a piece of card Use the 'right hand grip rule' to field depends on the current with iron filings sprinkled predict the direction of the through the wire and the near it. Apply a current field. distance from the wire. through the wire. WS 3.1 Shaping a wire to form a Draw the magnetic field solenoid increases the pattern for a solenoid carrying strength of the magnetic field a current (showing the created by a current through direction of the field). the wire. The magnetic field inside a solenoid is strong WS 1.4 and uniform. Compare the advantages and disadvantages of permanent
available because of matters of scale and complexity. 4.6.3.4 When a current flows through a conducting wire a magnetic field is produced around the wire. The shape of the magnetic field can be seen as a series of concentric circles in a plane, perpendicular to the wire. The direction of these field lines depends on the direction of the current. The strength of the magnetic field depends on the current through the wire and the distance from the wire. Shaping a wire to form a solenoid increases the strength of the magnetic field created by a current through the wire. The magnetic field inside a solenoid is strong and uniform. Describe how the magnetic effect of a current can be demonstrated. Use the hand grip rule’ to draw the magnetic field pattern of a wire carrying an electric current. 1 Use the ‘right hand grip rule’ to draw the magnetic field pattern of a wire carrying an electric current. WS 1.2, 3.1 Draw the magnetic pattern for a straight wire carrying a current (showing the direction of the field). WS 1.2 Use the 'right hand grip rule' to predict the direction of the field. WS 3.1 Draw the magnetic field pattern for a solenoid carrying a current (showing the direction of the field). WS 1.4 Compare the advantages and disadvantages of permanent Demonstrate what happens when a foil strip with a current flowing through it is placed in a strong magnetic field. What happens if the direction of the current is reversed? Try to demonstrate the shape by placing a wire through a piece of card with iron filings sprinkled near it. Apply a current through the wire.