SPM Physics

Under subtopic 3.2, u also need to know :

How to draw pattern of combined magnetic field due to current carrying conductor in the magnetic field?

Ok,it states the word combined magnetic field..so that means there are more than one magnetic field,which is;


i. magnetic field pattern due to current in the conductor(wire), (refer diagram 1)

ii. magnetic field pattern from poles of permanent magnet,(refer diagram 2)


When these 2 magnetic field combine, u'll get a pattern like this..(click the diagram below)


As conclusion, when the current carrying conductor is brought near to a permanent magnet, the two fields will interact to produce a resultant FORCE.

(The FORCE direction can be determined using LEFT HAND FLEMING RULE.)

So, in SPM u must understand & know how to draw those combined magnetic field.
I'll post some questions on this soon, till now, BYE!