Two straight wires separated by a very small distance run parallel to each other, one carrying a current of 3.0 A to the right and the other carrying a current of 6.8 A to the left. Give the approximate value for the magnitude of the magnetic field a large distance r from both wires.

B=(1/r) T. m

Explanation:

I1 = 3 A right

I2 = 6.8 A left

Let the distance is r from both the wires on the same side.

The formula for the magnetic field is given by

As the direction of current in both the wires is opposite to each other

so the net magnetic field is

B = B2 - B1

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation