Magnetic field of square circut

[Liquidxlax]

Homework Statement

Calculate the B-field at point P in the figure. Is the field strength at P greater or less then at the centre of the square?

don't laugh at my bad drawing :(

The Attempt at a Solution

my problem is I'm not sure what method I'm supposed to use. I think its a method that involves integration...

Biot and Savart

d\vec{B}=k_{m}I\frac{d\vec{s}x\hat{R}}{R^{2}}Ampere's Law

\Gamma_{B}=\int\vec{B}\cdotd\vec{s}

edit* it should be dot ds and closed integral

and just a general idea would be appreciated. thanks.

ps i hope the text works

 

[Liquidxlax]

anyone?

 

[stevenb]

anyone?

You should be able to integrate using Biot Savart. Concentrate on finding the field for a straight line, and then use superposition to add up the field from all linear pieces of the circuit.

 

[Liquidxlax]

thanks. i will try that