Question

. Two parallel wire, each 3m long, are situated at a distance of 0.05 m from
each other. A current of 5 A flows in each of the wires in the same direction.
Calculate the force acting on the wires. Comment on its nature ?​

Answer 1

Answer:

Given : I

1

=I

2

=5 A d=1 m

Force per unit length between them F=

2πd

μ

o

I

1

I

2

∴ F=

2π×1

4π×10

−7

×5×5

=5×10

−6

N/m

Since current flows in the same direction in the wires, so the wires attract each other.