A currentcarrying wire is laid on a table and is oriented fr

A current-carrying wire is laid on a table, and is oriented from north to south. Electrons in the wire are flowing north. What is the direction of the magnetic field at a location directly underneath the wire, due only to these moving electrons (in other words, the electron current is flowing north, which is the same as the conventional current flowing south)? North East South West Into the page Out of the page

Solution

electrons are flowing from south to north.

hence direction of current is north to south.

to find direction magnetic field.

keep right hand such that thumb is in the direction of current .

now curl finger around the wire then direction of fingers of right hand at that point will give direction of field.

hence for point underneath point, direction of field will be to the east,

Ans: East