# looking for help in solving combination circuits for dc electricity?

looking for help in solving combination circuits for dc electricity?

looking for help in solving combination circuits for dc electricity?
Combination Circuits: Review Questions 1. Refer to Figure 8 –2. Replace the values shown with the following. Solve for all the unknown values. IT = 0.6 A R1 = 470 Ω R2 = 360 Ω R3 = 510 Ω R4 = 430 Ω Refer to Figure 8 –5. Replace the values shown with the following. Solve for all the unknown values. ET = 63 V R1 = 1000 Ω R2 = 2200 Ω R3 = 1800 Ω R4 = 910 Ω R5 = 3300 Ω R6 = 4300 Ω R7 = 860 Ω 3. Refer to the circuit shown in Figure 8 –2. Redraw the circuit and use the following values: ET = 12 V R1 = 270 Ω R2 = 510 Ω R3 = 470 Ω R4 = 330 Ω Assume that an ammeter indicates a total circuit current of 15 mA. A voltmeter indicates the following voltage drops across each resistor: E1 = 12 V E2 = 0 V E3 = 7 V E4 = 5 V What is the most likely problem with this circuit? 1. Refer to the circuit shown in Figure 8 –22. The circuit has an applied voltage of 24 V and the resistors have values as follows: R1 = 1 kΩ R2 = 300 Ω R3 = 750 Ω R4 = 1 kΩ An ammeter and a voltmeter indicate the following values: IT = 42.5 mA I1 = 24 mA E1 = 24 V I2 = 18.5 mA E2 = 5.5 V I3 = 0 A E3 = 18.5 V I4 = 18.5 mA E4 = 18.5 V What is the most likely problem with this circuit? 2. Refer to Figure 8 –21. Assume that the resistors have the following values: R1 = 150 Ω R2 = 120 Ω R3 = 47 Ω R4 = 220 Ω Assume that an ohmmeter connected across the entire circuit indicates a value of 245 Ω. Does this reading indicate that there is a problem with the circuit and, if so, what is the most likely problem? FIGURE 8 –21 Series -parallel circuit. 