Ch 25: Resistors & DC CircuitsWorksheetSee all chapters
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Ch 25: Resistors & DC Circuits
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Concept #1: Solving Resistor Circuits

Practice: What is current and voltage across each resistor below?

Example #1: Find Current of One Resistor

Practice: What is the voltage of the battery below?

Additional Problems
The circuit in the sketch consists of three resistors and a battery with emf ε = 9.0 V and negligible internal resistance. R1 = 2.0 Ω, R2 = 12.0 Ω, and R3 = 4.0 Ω. What is the current flowing through each resistor?  I1 = _______________ I2 = _______________ I3 = _______________
The circuit in the sketch consists of three resistors and a battery with emf ε = 9.0 V and negligible internal resistance. R1 = 2.0 Ω, R2 = 12.0 Ω, and R3 = 4.0 Ω. What is the power dissipated by each resistor? P1 = _______________ P2 = _______________ P3 = _______________
Consider the circuit shown in the sketch. R1 = 3.0 Ω, R2 = 6.0 Ω, R3 = 6.0 Ω. and R4 = 12.0 Ω. What is the potential difference Vab between points a and b and what is the potential difference Vbc between points b and c? a) Vab = b) Vbc =
Consider the circuit shown in the sketch. R1 = 3.0 Ω, R2 = 6.0 Ω, R3 = 6.0 Ω. and R4 = 12.0 Ω. What is the current through each resistor? a) I1 = b) I2 =  c) I3 =  d) I4 =
The circuit shown in the sketch consist of two resistors and a battery with emf ε = 24.0 V and negligible internal resistance, R1 = 2.00 Ω and R2 = 4.00 Ω. What is the current through each resistor and what current I flows through the battery? I1 =  I2 =  I3 = 
The circuit shown in the sketch consist of two resistors and a battery with emf  E = 24.0 V and negligible internal resistance, R1 = 2.00 Ω and R2 = 4.00 Ω. What is the voltage across each resistor? V1 =  V2 = 
The current of the circuit in the 8 ohm resistor is 0.5 A. What is the current in the 2 ohm resistor? A) 2.25 A B) 0.75 A C) 4.5 A D) 9.5 A E) 6.4 A
Four resistors of values 2Ω, 4Ω, 3Ω, and 9Ω are connected across an 8-V DC source as shown in Figure 1. What is the current through the 9-Ω resistor? A) 0.9 A B) 1 A C) 2 A D) 0.7 A
A 2 ohm resistor and a 4 ohm resistor are connected in parallel to a 6 volt battery. The power dissipated by the 2 ohm resistor is: 1. 8 W 2. none of these 3. 9 W 4. 6 W 5. 18 W
A combination of resistors, shown in the accompanying figure, is attached to a 10 V battery. Assume R1 = R2 = 5 Ω, R3 = R4 = 15 Ωand R5 = 20 Ω. a) Find the equivalent resistor R1. b) Find the current through the resistor  R 3. c) Find the current through the resistor R 2. d) Find the voltage drop across the resistor R 2. e) Find the voltage drop across the resistor R 5.
A combination of resistors, shown in the accompanying figure, is attached to a 10 V battery. Assume R1 = R2 = 5Ω, R3 = R4 = 15Ω, and R5 = 20Ω. Find the equivalent resistor. Find the current through the resistor R1 Find the current through the resistor R3 Find the voltage drop across the resistor R2. Find the voltage drop across the resistor R5.