The loop shown in figure 4 below has a current i=4 amps and a magnetic flux dens
ID: 1937757 • Letter: T
Question
The loop shown in figure 4 below has a current i=4 amps and a magnetic flux density B=0.045 wb/m2. Determine the magnitude and the direction of the torque about axis A if L=0.2m, W=0.1m and d=0.03m. Calculate the magnitude and direction of the torque about axis A of figure 5 assuming all the same dimensions, currents and magnetic flux densities. How would the torque vary for each case if the loop were to rotate about the axis A in the clockwise direction? Figure 4 Figure 5 For the configurations of problem 4 how would the torque vary if the direction of the magnetic field intensities rotated about the axis A and the loops remained stationary?Explanation / Answer
4)
T = iAB = 4*(0.2*0.1)*0.045 =0.0036 Nm
direction : into the paper as looking from A ( rotaion of clockwise sense)
Figure 5
only more no. of turns
direction remains same
magntude , T' = 5*T = 5*0.0036 =0.018 Nm
direction : into the paper as looking from A ( rotaion of clockwise sense)
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