The rotor in a certain electric motor is a flat, rectangular coil with 88 turns of wire and dimensions 2.50 cm by 4.00 cm. The rotor rotates in a uniform magnetic field of 0.800 T. When the plane of the rotor is perpendicular to the direction of the magnetic field, it carries a current of 9.9 mA. In this orientation, the magnetic moment of the rotor is directed opposite the magnetic field. The rotor then turns through one-half revolution. This process is repeated to cause the rotor to turn steadily at 3600 rev/min. (a) Find the maximum torque acting on the rotor. Tmax=[ N-m (b) Find the peak power output of the motor. Pmax= w (c) Determine the amount of work performed by the magnetic field on the rotor in every full revolution. W = J (d) What is the average power of the motor? Pavg= W

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The rotor in a certain electric motor is a flat, rectangular coil with 88 turns of wire and dimensions 2.50 cm by 4.00 cm. The rotor rotates in a uniform magnetic field of 0.800 T. When the plane of the rotor is perpendicular to the direction
of the magnetic field, it carries a current of 9.9 mA. In this orientation, the magnetic moment of the rotor is directed opposite the magnetic field. The rotor then turns through one-half revolution. This process is repeated to cause the
rotor to turn steadily at 3600 rev/min.
(a) Find the maximum torque acting on the rotor.
Tmax=
N-m
(b) Find the peak power output of the motor.
Pmax =
W
(c) Determine the amount of work performed by the magnetic field on the rotor in every full revolution.
W =
(d) What is the average power of the motor?
Pavg =
W
Transcribed Image Text:The rotor in a certain electric motor is a flat, rectangular coil with 88 turns of wire and dimensions 2.50 cm by 4.00 cm. The rotor rotates in a uniform magnetic field of 0.800 T. When the plane of the rotor is perpendicular to the direction of the magnetic field, it carries a current of 9.9 mA. In this orientation, the magnetic moment of the rotor is directed opposite the magnetic field. The rotor then turns through one-half revolution. This process is repeated to cause the rotor to turn steadily at 3600 rev/min. (a) Find the maximum torque acting on the rotor. Tmax= N-m (b) Find the peak power output of the motor. Pmax = W (c) Determine the amount of work performed by the magnetic field on the rotor in every full revolution. W = (d) What is the average power of the motor? Pavg = W
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