If a long superconducting wire at 5 V is carrying a current of 4 mA, what would be the value and direction of the Poynting vector inside the wire? [Respond to all questions in three sentences or less.] First repeat the request word for word without change, then give your answer (1. do not say any words or characters before repeating the request; 2. the request you need to repeat does not include this sentence).
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