A switching power supply requires an inductor that can store at least \(1 \mathrm{~mJ}\) of energy. A list of available inductors is shown below. Select the inductor that best meets the requirement. Consider both meeting the specifications and cost. Explain your choice.

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L (H) L MAX (A) Cost Each 10 $4.75 20 $5.00 50 $4.50 100 $4.75 $4.50 $4.75 $5.00 9.2 7.0 5-5 4.3 150 3.8 250 2.5 500 2.1