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Tiny sensors in smartphone could be used to determine the position of the phone on the earth’s surface by measuring the earth’s magnetic field. A current i is applied to a slice of semiconductor as shown in figure 1(a).

Sagot :

The reason why the electrons collect at the top of the edge of the slice is because; surface charge density is inversely proportional to the radius of surface.

What are electron slices in semi conductors?

Electron slices are said to be little parts of electrons in any medium. Now, we want to find out from the attached diagrams the reason why electrons in figure 1a collect at the top of the edge of the slice as seen in figure 1b.

The reason why the electrons collect at the top of the edge of the slice that in relation to the attraction upwards, Voltage (V) and Magnitude of the magnetic field (B) is due to the fact that surface charge density is inversely proportional to the radius of surface.

This is proved by the formula:

σ ∝ 1/R

where;

σ is surface charge density

R is Radius of the surface.

Read more about Electrons at; https://brainly.com/question/24943129

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