What can cause a change in the direction of a magnetic field?

Change in the direction of current in a wire will change the magnetic field caused by that wire

Explanation:

As we know by Biot Savart law that magnetic field due to a current carrying element is given by

so here if the direction of current in the wire reversed then it will change the direction of length vector

This will reverse the direction of magnetic field at a given space

So magnetic field produced by a current carrying element only depends on the direction of the current so on reversing the direction of current we can change the magnetic field direction

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;