The rotating loop in an AC generator is a square 12.0 cm on a side. It is rotated at 70.0 Hz in a uniform field of 0.800 T. Calculate the following quantities as functions of time t, where t is in seconds. I need help with d and e.
(a) the flux through the loop
11.52cos(140πt) mT·m2
(b) the emf induced in the loop
5.067sin(140Ï€t) V
(c) the current induced in the loop for a loop resistance of 2.50 Ω
2.03sin(140Ï€t) A
(d) the power delivered to the loop
4.12sin2(140Ï€t) W (wrong)
(e) the torque that must be exerted to rotate the loop
mN·m
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