An alpha particle (charge +2e) and an electron move in opposite directions from the same point, each with the speed of 2.80×10^5 m/s . Find the total magnetic field these charges produce at point P, which is 8.25 nm from each charge. μ0=4πx10^-7 H/m, 1nm= 10^-9 m.

Explanation:

Magnetic field due to moving charge =

q is charge moving with velocity v and r is distance from point at which field is calculated .

For alpha particle

= 0.1316 x 10⁻³ T

For electron

= .0658 x 10⁻³ T .

Both these magnetic field will be same in direction because direction of equivalent current is same for both the particles .

Hence

Total magnetic field

= B₁ + B₂ = .1974 x 10⁻³

= 1.974 x 10⁻⁴ T .

The total magnetic field produced by these charges at the given point is 1.98 x 10⁻⁴ T.

The given parameters;

The magnetic field produced by each charge is calculated using Biot-Savart law;

The total magnetic field produced by these charges at the given point P;

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change tension

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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