1 Units, Trigonometry. And Vectors 2 Motion In One Dimension 3 Motion In Two Dimensions 4 Newton's Laws Of Motion 5 Energy 6 Momentum, Impulse, And Collisions 7 Rotational Motion And Gravitation 8 Rotational Equilibrium And Dynamics 9 Fluids And Solids 10 Thermal Physics 11 Energy In Thermal Processes 12 The Laws Of Thermodynamics 13 Vibrations And Waves 14 Sound 15 Electric Forces And Fields 16 Electrical Energy And Capacitance 17 Current And Resistance 18 Direct-Current Circuits 19 Magnetism 20 Induced Voltages And Inductance 21 Alternating-Current Circuits And Electromagnetic Waves 22 Reflection And Refraction Of Light 23 Mirrors And Lenses 24 Wave Optics 25 Optical Instruments 26 Relativity 27 Quantum Physics 28 Atomic Physics 29 Nuclear Physics 30 Nuclear Energy And Elementary Particles expand_more
18.1 Sources Of Emf 18.2 Resistors In Se Ries 18.3 Resistors In Pa Rallel 18.4 Kirchhoff's Ru Les And Complex Dc Circuits 18.5 Rc Circuits 18.6 Household Circuits 18.7 Electrical Safety 18.8 Conduction Of Electrical Signals By Neurons Chapter Questions expand_more
Problem 1CQ: Choose the words that make each statement correct. (i) When two or more resistors are connected in... Problem 2CQ: Given three lightbulbs and a battery, sketch as many different circuits as you can. Problem 3CQ: Suppose the energy transferred to a dead battery during charging is W. The recharged battery is then... Problem 4CQ: A short circuit is a circuit containing a path of very low resistance in parallel with some other... Problem 5CQ: Electric current I enters a node with three resistors connected in parallel (Fig. CQ18.5). Which one... Problem 6CQ: If electrical power is transmitted over long distances, the resistance of the wires becomes... Problem 7CQ: The following statements are related to household circuits and electrical safety. Determine whether... Problem 8CQ: Two sets of Christmas lights are available. For set A, when one bulb is removed, the remaining bulbs... Problem 9CQ: Why is it possible for a bird to sit on a high-voltage wire without being electrocuted? (See Fig.... Problem 10CQ: An uncharged series RC circuit is to be connected across a battery. For each of the following... Problem 11CQ: Suppose a parachutist lands on a high-voltage wire and grabs the wire as she prepares to be rescued.... Problem 12CQ: A ski resort consists of a few chairlifts and several interconnected downhill runs on the side of a... Problem 13CQ: Embodied in Kirchhoffs rules are two conservation laws. What are they? Problem 14CQ: Why is it dangerous to turn on a light when you are in a bathtub? Problem 1P: A battery haring an emf of 9.00 V delivers 117 mA when connected to a 72.0- load. Determine the... Problem 2P Problem 3P: A battery with an emf of 12.0 V has a terminal voltage of 11.5 V when the current is 3.00 A (a)... Problem 4P: A battery with a 0.100- internal resistance supplies 15.0 W of total power with a 9.00 V terminal... Problem 5P: Two resistors, R1 and R2 are connected in series. (a) If R1 = 2.00 and R2 = 4.00 , calculate the... Problem 6P: Three 9.0- resistors are connected in series with a 12-V battery. Find (a) the equivalent resistance... Problem 7P: (a) Find the equivalent resistance between points a and b in Figure P18.7. (b) Calculate the current... Problem 8P: Consider the combination of resistors shown in Figure P18.8. (a) Find the equivalent resistance... Problem 9P Problem 10P: Consider the circuit shown in Figure P18.10. (a) Calculate the equivalent resistance of the 10.0-... Problem 11P: Consider the circuit shown in Figure P18.11. Find (a) the potential difference between points a and... Problem 12P: Four resistors are connected to a battery as shown in Figure P18.12. (a) Determine the potential... Problem 13P: The resistance between terminals a and b in Figure P18.13 is 75 . If the resistors labeled R have... Problem 14P: A battery with = 6.00 V and no internal resistance supplies current to the circuit shown in Figure... Problem 15P: Find the current in the 12- resistor in Figure P18.15. Figure P18.15 Problem 16P: (a) Is it possible to reduce the circuit shown in Figure P18.16 to a single equivalent resistor... Problem 17P: (a) You need a 45- resistor, but the stockroom has only 20.- and 50.- resistors. How can the desired... Problem 18P: (a) Find the current in each resistor of Figure P18.18 by using the rules for resistors in series... Problem 19P: Figure P18.19 shows a Wheatstone bridge, a circuit used to precisely measure an unknown resistance R... Problem 20P: For the circuit shown in Figure P18.20, calculate (a) the current in the 2.00- resistor and (b) the... Problem 21P: Taking R = 1.00 k and = 250 V in Figure P18.21, determine the direction and magnitude of the... Problem 22P: In the circuit of Figure P18.22, the current I1 is 3.0 A and the values of and R are unknown. What... Problem 23P: In the circuit of Figure P18.23, determine (a) the current in each resistor, (b) the potential... Problem 24P: Four resistors are connected to a battery with a terminal voltage of 12 V, as shown in Figure... Problem 25P: Using Kirchhoffs rules (a) find the current in each resistor shown in Figure P18.25 and (b) find the... Problem 26P: Figure P18.26 shows a voltage divider, a circuit used to obtain a desired voltage Vout from a source... Problem 27P: (a) Can the circuit shown in Figure P18.27 be reduced to a single resistor connected to the... Problem 28P: A dead battery is charged by connecting it to the live battery of another car with jumper cables... Problem 29P: (a) Can the circuit shown in Figure P18.29 be reduced to a single resistor connected to the... Problem 30P: For the circuit shown in Figure P18.30, use Kirchhoffs rules to obtain equations for (a) the upper... Problem 31P: Find the potential difference across each resistor in Figure P18.31. Figure P18.31 Problem 32P: Show that = RC has units of time. Problem 33P: Consider the series RC circuit shown in Figure 18.17 for which R = 75.0 k, C = 25.0 F, and = 12.0... Problem 34P: An uncharged capacitor and a resistor are connected in series to a source of emf. If = 9.00 V, C =... Problem 35P: Consider a series RC circuit as in Figure P18.35 for which R = 1.00 M, C = 5.00 F, and = 30.0 V.... Problem 36P: The RC charging circuit in a camera flash unit has a voltage source of 275 V and a capacitance of... Problem 37P: Figure P18.37 shows a simplified model of a cardiac defibrillator, a device used to patients in... Problem 38P: The capacitor in Figure P18.35 is uncharged for t 0. If = 9.00 V, R = 55.0 , and C = 2.00 F, use... Problem 39P: What minimum number of 75-W light bulbs must be connected in parallel to a single 120-V household... Problem 40P: A 1 150-W toaster and an 825-W microwave oven are connected in parallel to the same 20.0-A, 120-V... Problem 41P Problem 42P Problem 43P: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited =... Problem 44P: Consider the model of the axon as a capacitor from Problem 43 and Figure P18.43. (a) How much energy... Problem 45P Problem 46AP: How many different resistance values can be constructed from a 2.0-, a 4.0-, and a 6.0- resistor?... Problem 47AP: (a) Calculate the potential difference between points a and b in Figure P18.47 and (b) identify... Problem 48AP: For the circuit shown in Figure P18.48, the voltmeter reads 6.0 V and the ammeter reads 3.0 m.A.... Problem 49AP: Figure P18.49 shows separate series and parallel circuits. (a) What is the ratio Vseries/Vparallel?... Problem 50AP: Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source, as shown in Figure P18.50.... Problem 51AP: When two unknown resistors are connected in series with a battery, the battery delivers 225 W and... Problem 52AP: The circuit in Figure P18.52a consists of three resistors and one battery with no internal... Problem 53AP: A circuit consists of three identical lamps, each of resistance R, connected to a battery as in... Problem 54AP: The resistance between points a and b in Figure P18.54 drops to one-half its original value when... Problem 55AP: The circuit in Figure P18.55 has been connected for several seconds. Find the current (a) in the... Problem 56AP Problem 57AP: The student engineer of a campus radio station wishes to verify the effectiveness of the lightning... Problem 58AP: The resistor R in Figure P18.58 dissipates 20 W of power. Determine the value of R. Figure P18.58 Problem 59AP: A voltage V is applied to a series configuration of n resistors, each of resistance R. The circuit... Problem 60AP: For the network in Figure P18.60, show that the resistance between points a and b is Rab=2717.... Problem 61AP: A battery with an internal resistance of 10.0 produces an open circuit voltage of 12.0 V. A... Problem 62AP: The circuit in Figure P18.62 contains two resistors, R1 = 2.0 k and R2 = 3.0 k, and two capacitors,... Problem 63AP: An electric eel generates electric currents through its highly specialized Hunters organ, in which... Problem 64AP: In Figure P18.64, R1 = 0.100 , R2 = 1.00 , and R3 = 10.0 . Find the equivalent resistance of the... Problem 65AP: What are the expected readings of the ammeter and voltmeter for the circuit in Figure P18.65? Figure... Problem 66AP: Consider the two arrangements of batteries and bulbs shown in Figure P18.66. The two bulbs are... Problem 67AP: The given pair of capacitors in Figure P18.67 is fully charged by a 12.0-V battery. The battery is... Problem 68AP: 2.00-nF capacitor with an initial charge of 5.10 C is discharged through a 1.30-k resistor. (a)... format_list_bulleted