Two long parallel wires carry currents of 10a (left wire) and 20a (right wire) in same direction. the distance between the wires are is 2cm. a) find magnitude of force per unit length exerted by the wires on each other
b) fins force if both wires are 5cm long
c) find the strength of the magnetic fields produced by each wire at a location 3cm to the right of 20a wire
d) find the strength and direction of the net magnetic field at this location