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tsrgb
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Homework Statement
A rectangular current-carrying coil, with side lengths a and b has N turns. The current, I is stable.
The coil is shorter than its width. Calculate the magnitude of the magnetic field at the centre of the rectangle.
Homework Equations
The law of Biot-Savart (I think).
The Attempt at a Solution
Stupid (I know) - but I am unsure of what to do with the element of Biot-Savart, which concerns the radius.
Perhaps I could divide the rectangle into 4 segments - calculate each segment:
Bsegment = (mu o/4p )(I/R)(cosa +cosb )
and then add them up?
Please, please help me as it is part of a larger assignment involving the effect of a magnetic field on a current-carrying coil.