could someone explain question 10.

I got the

but I don't know how to find its

the

could someone please explain why this is so?

thank u v much in advance :)

__JUST PART b)iii)____http://mrmackenzie.wikispaces.com/file/view/AHpastpaper2004.pdf__I got the

**magnitude**of the magnetic fieldbut I don't know how to find its

*I thought it might be to do with left and right hand rule?*__direction__the

**answer is***upwards*could someone please explain why this is so?

thank u v much in advance :)

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