Ask your teacher two long, straight wires are parallel and 11 cm apart. one carries a current of 2.9 a, the other a current of 5.3 a. (a) if the two currents flow in opposite directions, what is the magnitude (in n/m) and direction of the force per unit length of one wire on the other? magnitude n/m direction (b) what is the magnitude (in n/m) and direction of the force per unit length if the currents flow in the same direction? magnitude n/m direction
Answers: 3
and the direction is away from one another
= Vacuum permeability = 
= Current in first wire = 2.9 A
= Current in second wire = 5.3 A
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