A student used the stroking method to magnetise a steel bar as shown in the figure.
If the steel bar was divided into parts I, II, III and IV, which of these parts would be the north-pole?
AI
BII
CIII
DIV
A student used the stroking method to magnetise a steel bar as shown in the figure.
If the steel bar was divided into parts I, II, III and IV, which of these parts would be the north-pole?
AI
BII
CIII
DIV