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  • Two long straight parallel wires and separated by a distance <img alt="d" src="https://learn.careers360.com/latex-image/

Two long straight parallel wires A and B separated by a distance d, carry equal current I flowing in same direction as shown in the figure.

(a) Find the magnetic field at a point P situated between them at a distance x from one wire.

(b) Show graphically the variation of the magnetic field with distance x for 0< x< d..

 

 
 
 
 
 

Answers (1)

a)

Magnetic field due to A at P

B_1=\frac{\mu_0I}{2\pi x}

Magnetic field due to B at P

B_2=\frac{\mu_0I}{2\pi (d-x)}

\\B=B_1-B_2\\=\frac{\mu_0I}{2\pi}(\frac{1}{x}-\frac{1}{d-x})\\\\=\frac{\mu_0I}{2\pi}[\frac{d-2x}{x(d-x)}]

b)

Posted by

Safeer PP

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