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serious [3.7K]
3 years ago
14

Two long wires are oriented so that they are perpendicular to each other, and at their closest they are 20.0 cm apart. What is t

he magnitude of the magnetic field at a point midway between them if the top one carries a curent of 25.6 A and the bottom one carries 5.4 A?
Physics
1 answer:
mrs_skeptik [129]3 years ago
5 0

Answer:

523.2 x 10^-7 T

Explanation:

distance between the two wires, D = 20 cm

d = D/2 = 10 cm = 0.1 m

Current in first wire, i1 = 25.6 A

Current in second wire, i2 = 5.4 A

The magnetic field due to a straight current carrying conductor is given by

B=\frac{\mu _{0}}{4\pi }\frac{2i}{r}

Magnetic field due to the first wire

B_{1}=10^{-7}\times \frac{2\times 25.6}{0.1}

B_{1}=512\times 10^{-7} T

Magnetic field due to the second wire

B_{2}=10^{-7}\times \frac{2\times 5.4}{0.1}

B_{2}=108\times 10^{-7} T

The two magnetic field are perpendicular to each other

The resultant magnetic field is given by

B=\sqrt{B_{1}^{2}+B_{2}^{2}}

B=\sqrt{512^{2}+108^{2}}\times 10^{-7}

B = 523.2 x 10^-7 T

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