Question

Magnetic field due to a long straight conductor of length, carrying current at a point distance from it, is given by

• A. $B\,=$ $\frac{\mu_0}{4\pi}$ $\frac{2Ix}{d}$
• B. $B\,=$ $\frac{\mu_0}{4\pi}$ $\frac{2I}{d}$
• C. $B\,=$ $\frac{\mu_0}{2\pi}$ $\frac{2I}{d}$
• D. $B\,=$ $\frac{\mu_0}{4\pi}$ $\frac{2Ix}{d^2}$

Answer 1

Answer: (A)

B\,=$$\frac{\mu_0}{4\pi}$$\frac{2Ix}{d}

Answer 2

Standard relator.