Sample test 1

# Sample test 1 - ohms-Vd 39 ohms 78 ohm Vd/5 Use the node...

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ECE 3710 F Sample Test 1 1. a) Find charge q(t) (draw the figure) b) Find voltage v(t) if R =40 ohms (draw the figure) c) Find the power p(t) for R=40 ohms d) Find the energy in dissipated into the resistance R=40 ohms from t=0 to t=20s 2. 15.2 V 0.8 V 25 v - + 10 k ohms 200 ohms 500 ohms Ib 29 Ib V4 5 10 15 10 -10 20 -5 I(t

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a) Find the voltage V4 in the circuit above. b) Show that the total power generated in the circuit equals the total power absorbed 3. 80 V 8 OHMS 12 ohms 4 ohms 24 ohms 4 ohms 12 ohms 10 ohms 6 ohms Ig Ib Ia + - Vg The currents Ia and Ib in the circuit above are 4A and 2A respectively a) Find Ig b) Find the power dissipated in each resistor c) Find Vg d) Show that the power delivered by the current source is equal to the power absorbed all the other elements
4. 50 V + - 10 ohms 10 OHMS 30

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Unformatted text preview: ohms +-Vd 39 ohms 78 ohm Vd/5 Use the node voltage method to look for Vd in the circuit above. 5. +-4 A 25 ohms 5 OHMS 20 ohms 100 ohms-30 Id Id Use the mesh current method to find the total power developed in the circuit above 6. 70 V 20 ohms 4 OHMS 2 ohms Ib 10 OHMS-+ 50 V 2 Ib-+ V Use the principle of superposition to find the voltage v in the circuit 7. Derive the energy stored in the inductor in terms of current. Derive the energy stored in the capacitor stored in terms of voltage. (Hint: Write down p=iv, and then write I or v in terms of v or i) 8. Let ° ±² = ±³ − 5 ± ´ (i) Find v(t) (ii) Find p(t) (iii) Find the work done from t=0 to 5s. 9. Do one source free RL or RC circuit in the text book.p4.32, p.4.33...
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Sample test 1 - ohms-Vd 39 ohms 78 ohm Vd/5 Use the node...

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