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.