1a3 marks
Figure 1 shows a coil (solenoid) wrapped around a plastic PVC pipe. A current flows in the coil in the direction of the arrow.
Figure 1
(a)
On Figure 1, draw the magnetic field lines around the coil.
Add arrows to show the direction of the field.
[3 marks]
1b1 mark
(b)
A long soft iron bar is placed inside the PVC pipe. State the name of the device when current flows in the coil.
[1 mark]
1c2 marks
(c)
Current in a wire travels into the plane of the page, indicated by a cross in Figure 2.
Figure 2
Draw lines to represent the magnetic field generated by this current.
[2 marks]
Did this page help you?
