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ENGR 1181 Lab 3: Circuits Preparation Material Lab 3: Circuits Lab-Pre-lab Assignment Team Seat No. Name This is an individual assignment Solve the five problems below and hand it in at the beginning of the Circuits Lab. Show all your work Problem 1. Ohms Law For the circuit below, calculate the value of the resistor R which would cause the current of 2.5 mA to flow in the circuit What voltage would you measure across the resistor? Show your calculations. (4 points) 2.5 mA 5 Volts Vbat Problem 2. Kirchhoffs Voltage Law For the circuit below, calculate: (1) the equivalent resistance. (2) the current, L, flowing in the circuit, (3) the voltages V and V2, and (4) verify that Vs+V2 h Show all calculations. (Note: 1 ㏀-1010) (5 points) vi 10k 5 Volts Vbat 20k “ vbat ? 15
ENGR 1181 Lab 3: Circuits Lab Procedure Name Team Seat No. Problem 3. Power Law For the circuit in Problem 2, calculate the power dissipated in each resistor, and the total power generated. Show all calculations. (3 points) Problem 4. Equivalent Resistance Calculate the total equivalent resistance of the circuit below. Also, calculate the total current supplied by the battery, lo. Show all calculations. (3 points) 6 Voits 3 Ohms 9 Ohms 18 Ohms Problem 5. Kirchhoffs Current Law For the circuit in Problem 4, calculate the currents, It. l2, and ls. Does l 4)? Show all calculations. (3 points) + lo (from Problem 16 16 16
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