. Advertisement .
..3..
. Advertisement .
..4..
Direction of the Magnetic Field due to a Wire Conceptual Question
Find the direction of the magnetic field at each of the indicated points.
For the following two questions consider the wire shown in the figure.
......... ADVERTISEMENT .........
..8..

Part A: What is the direction of the magnetic field ......... ADVERTISEMENT ......... ..8.. at Point A?
(A)
......... ADVERTISEMENT .........
..8..

(B)
......... ADVERTISEMENT .........
..8..
(C)
......... ADVERTISEMENT .........
..8..
......... ADVERTISEMENT .........
..8..

(D)
......... ADVERTISEMENT .........
..8..

Part B: What is the direction of the magnetic field ......... ADVERTISEMENT ......... ..8.. at Point B?
(A)
......... ADVERTISEMENT .........
..8..
(B)
......... ADVERTISEMENT .........
..8..
(C)
......... ADVERTISEMENT .........
..8..
......... ADVERTISEMENT .........
..8..

(D)
......... ADVERTISEMENT .........
..8..
Revelant knowledge
The magnet field is a space within a magnet’s vicinity where the magnet’s magnetic properties act. Every magnet creates an own magnetic field. This may interact with other magnets and can even draw other magnets. This is why iron nails are pulled towards a bar magnet, even though there isn’t connection between the two. The magnetic field is only present at some proximity to the magnet. Its strength grows as the proximity to the magnetic field decreases and decreases as distance increases.
Correct answer:
Part A: (A)
is out of the page.
Part B: (B)
is into the page.
Explanation: Direction of field can be determined by the right-hand rule: grasp the wire with fingers of the right, in that direction to determine the flow of current. The direction that your fingers are encircling your wire determines the direction the magnetic field surrounds the wire.