2 years ago

Which kind of wave moves back and forth along the direction of the wave?.

Physics

1 answer:

Jlenok [28]2 years ago

4 0

The kind of wave it is Longitudinal

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A long, straight wire of radius R carries a steady current I that is uniformly distributed through the cross section of the wire

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Answer:

When $r \ge R$

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When $r< R$

$B = [\frac{\mu_o * I }{ 2 \pi R^2} ]* r$

Explanation:

From the question we are told that

The radius is R

The current is I

The distance from the center

Ampere's law is mathematically represented as

$B[2 \pi r] = \mu_o * \frac{I r^2 }{R^2 }$

$B = \frac{ \mu_o}{2 \pi } * \frac{r}{R^2}$

When $r \ge R$

=> $B = \frac{ \mu_o * I}{ 2 \pi r }$

But when $r< R$

$B = [\frac{\mu_o * I }{ 2 \pi R^2} ]* r$

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