(a)
The maximum torque acting on the rotor.
(a)
Answer to Problem 50P
The maximum torque acting on the rotor is
Explanation of Solution
Write the expression to calculate the maximum torque on the rotor.
Here,
Write the expression to calculate the area of the coil.
Here,
Substitute
Conclusion:
Substitute
Therefore, the charge on the capacitor
(b)
The peak power output of the motor.
(b)
Answer to Problem 50P
The peak power output of the motor is
Explanation of Solution
Write the expression to calculate the peak power output of the motor.
Here,
Conclusion:
Substitute
Therefore, the peak power output of the motor is
(c)
The amount of work performed by the magnetic field on the rotor in every full revolution.
(c)
Answer to Problem 50P
The amount of work performed by the magnetic field on the rotor in every full revolution is
Explanation of Solution
Write the expression to calculate the period of the current.
Here,
Write the expression to calculate the work done.
Here,
Substitute
Conclusion:
Substitute
Therefore, the amount of work performed by the magnetic field on the rotor in every full revolution is
(d)
The average power of the motor.
(d)
Answer to Problem 50P
The average power of the motor is
Explanation of Solution
Write the expression to calculate the average power.
Here,
Conclusion:
Substitute
Therefore, the average power of the motor is
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Chapter 29 Solutions
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
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