Question

calculate the force per unit length on a long straight wire carrying current of 4A due to a parallel wire carrying current 6A. Distance between the wires in 3 cm.

Answer 1

The force per unit length between two current carrying conductors(wires) separated by distance 'r' is given by

L

F

=

2πr

M

0

I

1

I

2

=(4×10

−7

)(4)(6)(2×π+0.03)

=1.6×10

−4

n/m.