Two parallel wires have a current of 22a flowing through each oneof
them. when the wires are placed 25cm apart, the exert a force
of2.7x10-4n on each other. find the length of the wires.

The length of both the wires is 69 cm

Explanation:

It is given that,

Current flowing in each wire,

Distance between wires, d = 25 cm = 0.25 m

Force exerted on each wire,

The force per unit length between two parallel wires carrying current is given by :

l is the length of the wires

or

l = 69 cm

So, the length of both the wires is 69 cm. Hence, this is the required solution.              

the inner core.

good luck: )

klicker