Two parallel wires are 14cm apart. One carries a current of 2.3A, while the other carries a current of 5.4A in the same direction. What is the magnitude of the force per unit length that one wire exerts on the other?

A 3.5 m wire carries a current of 5.5 A. The direction of the conventional current is due west. The strength of Earth’s magnetic field at the location of the wire is 6.0 x 10-5 T and the orientation of the field is north. Both the wire and Earth’s magnetic field are horizontal. (a) What is the magnitude and direction of Earth’s magnetic force on the wire? (b) What will the force on the wire be if the wire is rotated to an angle of 720 with the magnetic field?

What is the magnitude of the electrical force between two uranium nuclei placed a distance of 1.42 x 10^-12 m apart from one another? 1.642 N 0.580 N 0.966 N 1.256 N

i. Two long, parallel wires are separated by 1.49 cm and carry currents of 2.17 A and 3.93 A. Find the magnitude of the attractive force F that acts on a 3.85 m length of either wire. ii. Do the currents run in the same or opposite directions? How do you know?