Question

An infinite number of thin parallel wires are grouped into two sheets. One sheet spans from (x,y) = (- ∞, 5cm) to (x,y) = (+ ∞ , 5cm) and the other spans from (x,y) = (-∞ , - 5cm) to (x,y) = (+ ∞, - 5cm) . These wires all carry a current of 5A out of the page and there are 10 wires per cm.

Determine, in T, the magnetic field in the x direction inside the two sheets at y=0. Include the appropriate sign in your answer

Answer 1

To solve this problem you have to know about Magnetic field

Step 1.

Definition: The magnetic field are produced by any moving electrical charge and the intrinsic magnetic moment of elementary particles associated with a fundamental quantum property.

Step 2.

For the sheet form   to :

Using the ampere's law for a infinity wire we have the following:

where n is te numbers of wire, L the length of sheet and I the current across the wire.

now equate the equations

The unit in the international system in length is m then , there is carry from cm to meters

if there are 10 wires in cm, how many wires will in one meter?

then in 1 m there are 1000 wires

For the sheet form   to

the magnetic fiel prodece above of the sheet is equal at the before magnectic fiel but opposite sign, because the direction of the magneti fiel is x negative

If you have any question please let me know in the comments