(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A rectangular coil consists of 25 turns of wire forming a square 4cm each side. By considering the force on a current-carrying straight wire, calculate the torque acting on the coil when the normal is at 30 degrees to a magnetic field of 0.8T and 12 A are flowing.

2. Relevant equations

t = ucrossB

F = IlcrossB

3. The attempt at a solution

Umm I am a bit stuck with this as I do now know why I am meant to be using the force acting on the current carrying wire. I thought I could just use the t = ucrossB forumla in the form:

t = ubsintheta

where u = IA

However this clearly isnt correct so I am looking for some help! Thanks

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# Homework Help: Torque acting on a coil?

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