(a) What is the direction of the force on a wire carrying a current due east in a location where the Earth’s field is due north? Both are parallel to the ground.
Answer: Direction of force is Vertically up from ground
(b) Calculate the force per meter if the wire carries 23.0 A and the field strength is 2.88×10-5 T.
(c) What diameter copper wire would have its weight supported by this force?
(d) Calculate the resistance per meter and the voltage per meter needed.
I answered the first question, but not sure how to answer the other three