Explain how an eddy current brake works, referring to Lenz’s law and energy conservation. Include one practical application.
A horizontal wire of length 0.3 m carries a current of 5.0 A. It is placed in a uniform magnetic field of 0.2 T directed at 30° to the wire. Calculate the magnitude of the magnetic force on the wire. physics module 6 questions
In a DC motor, the split-ring commutator reverses current every half cycle to: A) Increase speed B) Prevent overheating C) Keep torque in the same direction D) Convert AC to DC Explain how an eddy current brake works, referring
Describe the energy conversion in: a) A DC motor b) An AC generator physics module 6 questions