What must be the minimum power rating for the external pass transistor used with a 7815 reguiator in a circuit such as that shown in Figure below? The input voltage is 30 V and the load resistance is 10 N. The maximum internal current is to be 700 mA Assume that there is no heat sink for this calculation. Keep in mind that the use of a heat sink increases the effective power rating of the transistor and you can use a lower rated transistor. VIN est VoUT 7815 RL

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