For the figure below how, large must the current be to produce a magnetic field of at a distance of 2 cm from a wire as shown? What is the direction of the field at this point?
current and field direction
Solve the equation for “I”:
Plug in the numbers:
Finding the direction of the field: The right-hand rule.
Resulting field if current is coming out of page (like you are looking at the end of wire that current is coming out of)