 18.18.1: A battery having an emf of 9.00 V delivers 117 mA when connected to...
 18.18.2: A 4.0resistor, an 8.0resistor, and a 12resistor are connected in...
 18.18.3: A lightbulb marked 75 W [at] 120 V is screwed into a socket at one ...
 18.18.4: A 9.0resistor and a 6.0resistor are connected in series with a po...
 18.18.5: (a) Find the equivalent resistance between points a and b in Figure...
 18.18.6: Find the equivalent resistance of the circuit in Figure P18.6.
 18.18.7: What is the equivalent resistance of the combination of resistors b...
 18.18.8: (a) Find the equivalent resistance of the circuit in Figure P18.8. ...
 18.18.9: Consider the circuit shown in Figure P18.9. Find (a) the current in...
 18.18.10: Two resistors, A and B, are connected in parallel across a 6.0V ba...
 18.18.11: Two resistors, A and B, are connected in parallel across a 6.0V ba...
 18.18.12: Three 100resistors are connected as shown in Figure P18.12. The ma...
 18.18.13: Find the current in the 12resistor in Figure P18.13.
 18.18.14: Calculate the power delivered to each resistor in the circuit shown...
 18.18.15: (a) You need a 45resistor, but the stockroom has only 20and 50re...
 18.18.16: The ammeter shown in Figure P18.16 reads 2.00 A. Find I1, I2, and .
 18.18.17: Determine the current in each branch of the circuit shown in Figure...
 18.18.18: Determine the potential difference Vab for the circuit in Figure P1...
 18.18.19: Figure P18.19 shows a circuit diagram. Determine (a) the current, (...
 18.18.20: In the circuit of Figure P18.20, the current I1 is 3.0 A while the ...
 18.18.21: What is the emf of the battery in the circuit of Figure P18.21?
 18.18.22: Four resistors are connected to a battery with a terminal voltage o...
 18.18.23: Using Kirchhoffs rules, (a) nd the current in each resistor shown i...
 18.18.24: Two 1.50V batterieswith their positive terminals in the same direc...
 18.18.25: Calculate each of the unknown currents I1, I2, and I3 for the circu...
 18.18.26: A dead battery is charged by connecting it to the live battery of a...
 18.18.27: Find the current in each resistor in Figure P18.27.
 18.18.28: (a) Determine the potential difference Vab for the circuit in Figur...
 18.18.29: Find the potential difference across each resistor in Figure P18.29.
 18.18.30: Show that RC has units of time.
 18.18.31: Consider a series RC circuit for which C 6.0F, R 2.0106, and 20 V. ...
 18.18.32: An uncharged capacitor and a resistor are connected in series to a ...
 18.18.33: Consider a series RC circuit for which R 1.0 M, C 5.0F, and 30 V. F...
 18.18.34: A series combination of a 12kresistor and an unknown capacitor is ...
 18.18.35: A capacitor in an RC circuit is charged to 60.0% of its maximum val...
 18.18.36: A series RC circuit has a time constant of 0.960 s. The battery has...
 18.18.37: An electric heater is rated at 1 300 W, a toaster at 1 000 W, and a...
 18.18.38: A lamp (R 150), an electric heater (R 25), and a fan (R 50) are con...
 18.18.39: A heating element in a stove is designed to dissipate 3 000 W when ...
 18.18.40: Your toaster oven and coffeemaker each dissipate 1 200W of power. C...
 18.18.41: Assume that a length of axon membrane of about 10 cm is excited by ...
 18.18.42: Consider the model of the axon as a capacitor from and Figure P18.4...
 18.18.43: Using Figure 18.28b and the results of 18.41d and 18.42a, nd the po...
 18.18.44: Consider an RC circuit in which the capacitor is being charged by a...
 18.18.45: Find the equivalent resistance between points a and b in Figure P18...
 18.18.46: For the circuit in Figure P18.46, calculate (a) the equivalent resi...
 18.18.47: Find (a) the equivalent resistance of the circuit in Figure P18.47,...
 18.18.48: Three 60.0W, 120V lightbulbs are connected across a 120V power s...
 18.18.49: An automobile battery has an emf of 12.6 V and an internal resistan...
 18.18.50: In Figure P18.50, suppose that the switch has been closed for a len...
 18.18.51: Find the values of Il, I2, and I3 for the circuit in Figure P18.51.
 18.18.52: The resistance between points a and b in Figure P18.52 drops to one...
 18.18.53: A generator has a terminal voltage of 110 V when it delivers 10.0 A...
 18.18.54: An emf of 10 V is connected to a series RC circuit consisting of a ...
 18.18.55: The student engineer of a campus radio station wishes to verify the...
 18.18.56: The resistor R in Figure P18.56 dissipates 20 W of power. Determine...
 18.18.57: A voltage V is applied to a series conguration of n resistors, each...
 18.18.58: For the network in Figure P18.58, show that the resistance between ...
 18.18.59: A battery with an internal resistance of 10.0produces an opencircu...
 18.18.60: The circuit in Figure P18.60 contains two resistors, R1 2.0kand R2 ...
 18.18.61: Consider the circuit shown in Figure P18.61. Find (a) the potential...
 18.18.62: In Figure P18.62, R1 0.100, R2 1.00, and R3 10.0. Find the equivale...
 18.18.63: What are the expected readings of the ammeter and voltmeter for the...
 18.18.64: Consider the two arrangements of batteries and bulbs shown in Figur...
 18.18.65: Using insulated wire, connect one terminal of a Dcell battery to t...
 18.18.66: Use the basic equipment of activity 1 plus a few more items to test...
 18.18.67: Repeat activity 2, but this time connect the bulbs in parallel with...
 18.18.68: Continue your experimentation with circuits by connecting the batte...
Solutions for Chapter 18: Current and ResistanceDirectCurrent Circuits
Full solutions for College Physics  7th Edition
ISBN: 9780495113690
Solutions for Chapter 18: Current and ResistanceDirectCurrent Circuits
Get Full SolutionsSince 68 problems in chapter 18: Current and ResistanceDirectCurrent Circuits have been answered, more than 37125 students have viewed full stepbystep solutions from this chapter. Chapter 18: Current and ResistanceDirectCurrent Circuits includes 68 full stepbystep solutions. College Physics was written by and is associated to the ISBN: 9780495113690. This expansive textbook survival guide covers the following chapters and their solutions. This textbook survival guide was created for the textbook: College Physics, edition: 7.

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parallel

any symbol
average (indicated by a bar over a symbol—e.g., v¯ is average velocity)

°C
Celsius degree

°F
Fahrenheit degree