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bazaltina [42]
3 years ago
6

The body contains many small currents caused by the motion of ions in the organs and cells. Measurements of the magnetic field a

round the chest due to currents in the heart give values of about 10.0 μG . Although the actual currents are rather complicated, we can gain a rough understanding of their magnitude if we model them as a long, straight wire.If the surface of the chest is 5.40 cm from this current, how large is the current in the heart?
Physics
1 answer:
RoseWind [281]3 years ago
8 0

Answer:

270 μA

Explanation:

Use the magnetic field due to long, straight wire and solve for current I.

B= \frac{\mu_0I}{2\pi r}

I= \frac{2\pi r B}{\mu_0}

plug in the values

I= \frac{2\pi(5.40\times10^{-2})\times10\times10^{-6}\times10^{-4}}{4\pi\times10^{-7}}

= 2.7×10^{-4)×10^6

=270 μA

The current that flows in the  heart is 270 μA

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