Question

If the current in a wire is directed upward, what is the direction of the magnetic field produced by the current?

A. in the same direction as the current
B. counterclockwise
C. in the opposite direction to the current
D. clockwise

Answer 1

If the direction of the current is upward, then the direction of magnetic field would be "Counter-clockwise"

In short, Your Answer would be Option B

Hope this helps!

Answer 2

B. counterclockwise

Step-by-step explanation:

We can solve the problem by using the right-hand rule:

- put your thumb finger of the right hand in the same direction of the current in the wire (upward)

- wrap the other fingers around the thumb

- the direction of the other fingers will give the direction of the magnetic field lines

By doing these steps, we see that the other fingers form concentric circles in a counterclockwise direction (seen from above), so this is the direction of the magnetic field lines.