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Unformatted text preview: Example 2: (From P120, Circuits, Devices and Systems by Smith and Dorf) The current source in Fig 2 provides an output defined by I=5t A. where t is in seconds. For time t = 2s calculate: a) The power dissipated if R = 15 Ω . b) The power of inductor if L = 10H. c) The power delivered by the source. d) The total energy dissipated in the resistor. e) The total energy stored in the inductor. Answers to Example 2: a) W R I IV P R 1500 15 10 2 2 = × = = = b) W dt dI L I IV P L 500 5 10 10 = × × = × = = c) W P P P L R s 2000 = + = d) J t dt t dt t dt R I dt P E R R 1000 3 375 375 15 25 2 3 2 2 2 2 2 2 2 = = = × = = = ∫ ∫ ∫ ∫ J LI IdI L dt dt dI L I dt P E L L 500 2 1 2 2 2 2 = = = × = = ∫ ∫ ∫ I(t) R L Fig. 2...
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This note was uploaded on 10/28/2011 for the course ELEC 101 taught by Professor Chan during the Spring '09 term at HKUST.
 Spring '09
 CHAN
 Volt

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