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Circuits in Series and Parallel
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Equivalent Resistance
1. Determine the equivalent resistance of the complex circuit shown in the Figure 20-18.
2. For each of the following sets of values, determine the equivalent resistance for the circuit shown in Figure 20-21.
a. Ra = 25.0 Ω Rb = 3.0 Ω Rc = 40.0 Ω
b. Ra = 12.0 Ω Rb = 35.0 Ω Rc = 25.0 Ω
c. Ra = 15.0 Ω Rb = 28.0 Ω Rc = 12.0 Ω
Figure 20-21
3. For each of the following sets of values, determine the equivalent resistance for the circuit shown in Figure 20-22.
a. Ra = 25.0 Ω Rb = 3.0 Ω Rc = 40.0 Ω Rd = 15.0 Ω Re = 18.0 Ω
b. Ra = 12.0 Ω Rb = 35.0 Ω Rc = 25.0 Ω Rd = 50.0 Ω Re = 45.0 Ω
Diagrams taken from Holt Physics - 2002
Circuits in Series and Parallel
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Current in and Potential Difference Across a resistor
4. Determine the current in and potential difference across the 2.0 Ω resistor highlighted in Figure 20-23.
5. Calculate the current in and potential difference across each of the resistors shown in the schematic diagram in
Figure 20-28.
Diagrams taken from Holt Physics - 2002