need help dont understand how to get the answer Two long, parallel conductors, s

Question

need help dont understand how to get the answer

Two long, parallel conductors, separated by 13.0 cm, carry currents in the same direction. The first wire carries a current I1 = 2.00 A, and the second carries I2 = 8.00 A. (See figure below. Assume the conductors lie in the plane of the page.)

(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?

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

magnitude T direction ---Select--- in the +x direction in the -x direction in the +y direction in the -y direction in the +z direction in the -z direction z

Explanation / Answer

Given that

Two long, parallel conductors, separated by (r) =13.0 cm=0.13m carry currents in the same direction.

The first wire carries a current (I1) = 2.00 A

The the second wire carries a current of ( I2) = 8.00 A

Now the magnetic field created by I1 at the location of I2 is given by

B1 =

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