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Two long straight current-carrying wires run parallel to each other. The current in one of the wires is 7.2A, their separation is 18.1 cm and they repel each other with a force per unit length of 2.6 x104 N/m. Determine the current in the other wire.

Respuesta :

Answer:

3.26 x 10^9 A

Explanation:

I1 = 7.2 A, r = 18.1 cm = 0.181 m, F/l = 2.6 x 10^4 N/m

Let teh current in other wire is I2.

Use the formula of force per unit length

[tex]F / l = \frac{\mu _{0}}{4\pi }\times \frac{2 I_{1}I_{2}}{r}[/tex]

[tex]2.6 \times 10^{4} = 10^{-7}\frac{2 \times 7.2I_{2}}{0.181}[/tex]

I2 = 3.26 x 10^9 A

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