Question

A current of 10A flows through each of two parallel long wires. the wires are 5cm apart. calculate the force acting per unit length of each wire. use the standard value of constant required​

Answer 1

Answer:

Force on one wire due to other is F=BI

2

l where magnetic field B=

2πr

μ

0

I

1

due to first wire at distance r.

Thus force per unit length between them is F/l=BI

2

=

2πr

μ

0

I

1

I

2

=

2π×1

(4π×10

−7

)×10×10

=2×10

−5

N/m