Question

formula of magnetic field​

Answer 1

The equation for the magnetic field strength (magnitude) produced by a long straight current-carrying wire is: B=μ0I2πr. For a long straight wire where I is the current, r is the shortest distance to the wire, and the constant 0=4π10−7 T⋅m/A is the permeability of free space.

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Answer 2

It is found to be F=Bilsinθ F = Bi l sin θ , where ℓ is the length of the wire, i is the current, and θ is the angle between the current direction and the magnetic field.

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