363. Find the power, given energy E = 2J and current density J = x2 varies from x = 0 and x = 1. a) 1/3 b) 2/3 c) 1 d) 4/3
363. Find the power, given energy E = 2J and current density J = x2 varies from x = 0 and x = 1. a) 1/3 b) 2/3 c) 1 d) 4/3
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Answer: b
Explanation: From Stoke’s theorem, we can calculate P = E X I = ∫ E. J ds
= 2∫ x2 dx as x = 0->1. We get P = 2/3 units.