An AC generator, or alternator, converts mechanical energy into electrical energy through electromagnetic induction. It consists of a rotor that spins within a magnetic field, inducing an alternating current in the coils of wire. The generated AC voltage can be transformed into DC voltage using a rectifier. Understanding the basic principles of electromagnetic induction is crucial for grasping how both AC generators and DC batteries operate. Clear explanations and diagrams can enhance comprehension for those struggling with the concepts.
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k4lady
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Hi I have to finish assignment due tomorrow for Physics but I'm really bad at physics so could someone explain to me very simply how does an a.c generator work and d.c battery ?
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?