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Energy Stored in a Magnetic Field

Hi. Can someone please show me how to do the following problem? I am not too sure how to approach it.

Question: Given an RL circuit in which there's a 9.0 V battery, R = 5.5 ohms, L = 6.1 mH, and there's a switch that can be opened or closed, how much energy is stored in the inductor after the switch has been closed a long time?

Thank you.

Solution Summary

This solution provides the necessary information required to solve for the answer to this physics based question and gives the final answer in the appropriate units.