Current in Induction: Calculating Mutual Induction

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The discussion revolves around calculating the current produced in a second inductor due to mutual induction with a first inductor sharing the same iron core. It highlights the relationship between voltage changes and current, emphasizing that the current in the second inductor is influenced by the number of windings in each inductor. The principles of conservation of energy and Faraday's Law are mentioned as relevant to understanding these dynamics. The participants explore how to derive the current in the second inductor based on these factors. Overall, the conversation focuses on the complexities of mutual induction and its mathematical implications.
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Homework Statement



Lets say that I have two inductors whihc share the same iron core and I run a current through the first inductor. I know how voltage changes under mutual induction, but how can I figure out the current produced through mutual induction?
 
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How about conservation of energy, or power in = power out?
 
So the current in the second inductor is the same as the current in the first inductor? Is there a way I can derive this?
 
yeah so that gives me voltage. I just divided by resistance right?
 
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?

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