Iron filings

Diagram shows a coil which carries a current. Iron filings are sprinkeled onto the manila card to trace the pattern of the magnetic field.
Rajah menunjukkan suatu gegelung yang membawa arus. Serbuk besi ditaburkan ke atas kad manila untuk menyurih corak medan magnet.





Which of the following is the following is the pattern of the magnetic field produced?
Antara yang berikut, yang manakah ialah corak medan magnet terhasil?





 Answer : C 
The right hand grip rule can be used to both sides of the coil to determine the direction of magnetic field