Question

Long straight wire carries a current of 5 ampere the magnetic field due to it will be 5 into 10 raise to power minus 5

Answer 1

Answer:

4mm

Explanation:

I assume that you are asking about the distance at which B = 5*10^-5

B=[mu I]/[2 pi r]

by substituting the given values in this formula u will get the answer

Answer 2

The distance from the wire is 0.02 meters.

Explanation:

It is given that,

Current in wire, I = 5 A

Magnetic field due to a long straight wire, $B=5\times 10^{-5}\ T$

It is assumed to find the distance from the wire. The magnetic field due to a long straight wire is given by :

$B=\dfrac{\mu_o I}{2\pi r}$

$r=\dfrac{\mu_o I}{2\pi B}$

$r=\dfrac{4\pi \times 10^{-7}\times 5}{2\pi \times 5\times 10^{-5}}$

r = 0.02 m

So, the distance from the wire is 0.02 meters. Hence, this is the required solution.

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