- #1
davidbenari
- 466
- 18
Homework Statement
Find the maximum torque on a square shaped wire provided N=120; l=4cm;R=10##\Omega##; B=0.2 T ; ##\omega=200 revs/sec##
Homework Equations
##\tau=IaBsin(\theta)##
##\epsilon=\frac{d}{dt}\Phi##
The Attempt at a Solution
##i=\frac{\epsilon}{R}=-\frac{\frac{d}{dt} (BAcos\omega t)}{R}##
##i_{max}=\frac{NBA\omega}{R}##
##\tau=il^2 B sin(\omega t)##
##\tau_{max}=il^2B = 2.6x10^-5 Nm##
This solution depends on the fact that my area vector is initially parallel to the magnetic field.