Question

At what distance from a long straight wire carrying a

Answer 1

Answer:

The distance is 2 cm

Solution:

According to the question:

Magnetic field of Earth, B_{E} = $5.0\times 10^{- 5} T$

Current, I = 5.0 A

We know that the formula of magnetic field is given by:

$B = \farc{\mu_{o}I}{2\pi d}$

where

d = distance from current carrying wire

Now,

$d = \frac{\mu_{o}I}{2\pi B}$

$d = \frac{4\pi\times 10^{- 7}\times 5.0}{2\pi\times 5.0\times 10^{- 5}}$

d = 0.02 m 2 cm