Two long, parallel conductors, separated by 11.0 cm, carry currents in the same direction. The first wire carries a current I1 = 3.00 A, and the second carries I2 = 8.00 A. (a) What is the magnetic field created by I1 at the location of I2?

(b) What is the force per unit length exerted by I1 on I2?

(c) What is the magnetic field created by I2 at the location of I1?

Explanation:

Given that,

Separation between two long parallel conductors, r = 11 cm = 0.11 m

Current in first wire,

Current in second wire,

(a) The magnetic field created by I₁ at the location of I₂ is given by :

(b) Magnetic force per unit length exerted by on is given by :

(c) The magnetic field created by I₂ at the location of I₁ is given by :

Hence, this is the required solution.

f is prop to m1xm2 double m1 double force