Question 1

Draw a circuit consisting of a battery connected to two resistors,R1 and R2,in series with each other and a capacitor C connected across the resistors.

Accepted Answer

A)   
B)   
C)   
D)   
A)   
B)   
C)   
D)

Question 2

A charge of 12 C passes through an electroplating apparatus in 2.0 min.What is the average current through the apparatus?

Accepted Answer

A) 0.10 A 
B) 0.60 A 
C) 1.0 A 
D) 6.0 A 
A) 0.10 A 
B) 0.60 A 
C) 1.0 A 
D) 6.0 A

Question 3

Determine the current through the 12-Ω resistor for the circuit shown in the figure assuming that the batteries are ideal.

Accepted Answer

A) 0.25 A 
B) 0.50 A 
C) 0.75 A 
D) 1.0 A 
A) 0.25 A 
B) 0.50 A 
C) 0.75 A 
D) 1.0 A

Question 4

A battery has an emf ε = 43.0 V and an internal resistance r = 8.0 Ω,as shown in the figure.When the terminal voltage Vab is equal to 34.0 V,the current through the battery,including its direction,is closest to

Accepted Answer

A) 1.1 A, from b to a. 
B) 4.2 A, from b to a. 
C) 1.1 A, from a to b. 
D) 4.2 A, from a to b. 
E) 5.4 A, from b to a. 
A) 1.1 A, from b to a. 
B) 4.2 A, from b to a. 
C) 1.1 A, from a to b. 
D) 4.2 A, from a to b. 
E) 5.4 A, from b to a.

Question 5

A battery you buy at the store has an internal emf of 3.0 V.If it has an internal resistance of $14.0 \Omega$ what current will this battery put out if it is short-circuited?

Accepted Answer

A) 0.21 A 
B) 42 A 
C) 4.7 A 
D) 130 A 
A) 0.21 A 
B) 42 A 
C) 4.7 A 
D) 130 A

Question 6

What is the potential drop from point A to point B for the circuit shown in the figure? The battery is ideal,and all the numbers are accurate to two significant figures.

Accepted Answer

A) 0.35 V 
B) 2.0 V 
C) 2.5 V 
D) 3.0 V 
A) 0.35 V 
B) 2.0 V 
C) 2.5 V 
D) 3.0 V

Question 7

For the graph shown in the figure,what physical quantity does the slope of the graph represent for ohmic material?

Accepted Answer

A) power 
B) resistivity 
C) 1/(resistivity) 
D) resistance 
E) 1/(resistance) 
A) power 
B) resistivity 
C) 1/(resistivity) 
D) resistance 
E) 1/(resistance)

Question 8

A certain metal has a resistivity of 1.68 × 10-8 Ω ∙ m.You have a long spool of wire made from this metal.If this wire has a diameter of 0.15 mm,how long should you cut a segment so its resistance will be 15 Ω?

Accepted Answer

A) 16 mm 
B) 16 cm 
C) 1.6 m 
D) 16 m 
A) 16 mm 
B) 16 cm 
C) 1.6 m 
D) 16 m

Question 9

A toaster is rated at 800 W when operating at 120 V dc.What is the resistance of its heating element?

Accepted Answer

A) 16 Ω 
B) 18 Ω 
C) 6.7 Ω 
D) 0.15 Ω 
A) 16 Ω 
B) 18 Ω 
C) 6.7 Ω 
D) 0.15 Ω

Question 10

When different resistors are connected in parallel across an ideal battery,we can be certain that

Accepted Answer

A) there is the same current through each one. 
B) the potential difference across each is the same. 
C) the power dissipated in each is the same. 
D) their equivalent resistance is greater than the resistance of any one of the individual resistances. 
E) their equivalent resistance is equal to the average of the individual resistances. 
A) there is the same current through each one. 
B) the potential difference across each is the same. 
C) the power dissipated in each is the same. 
D) their equivalent resistance is greater than the resistance of any one of the individual resistances. 
E) their equivalent resistance is equal to the average of the individual resistances.

Question 11

The power rating of a 400-Ω resistor is 0.800 W.
(a)What is the maximum safe voltage across this resistor?
(b)What is the maximum current the resistor can safely draw?

Accepted Answer

(a)17.9 V

Question 12

The resistivity of a 1.0 m long copper wire is 1.72 × 10-8 Ω ∙ m and its cross sectional area is 2.0 × 10-6 m2.If the wire carries a current of 0.20 A,what is the voltage across the wire?

Accepted Answer

A) 17 mV 
B) 0.90 mV 
C) 1.7 mV 
D) 10 mV 
E) 90 mV 
A) 17 mV 
B) 0.90 mV 
C) 1.7 mV 
D) 10 mV 
E) 90 mV

Question 13

Identical ideal batteries are connected in different arrangements to the same light bulb,as shown in the figure.For which arrangement will the bulb shine the brightest? 
A
 
B
 
C

Accepted Answer

A) A 
B) B 
C) C 
A) A 
B) B 
C) C

Question 14

How much current will be flowing through a $57.0 - \mathrm { m }$ length of copper wire with radius $0.0 \mathrm {~mm}$ if it is connected to a source supplying $62.0 \mathrm {~V} \text { ? }$ The resistivity of the metal is 1.68 × 10-8 Ω ∙ m.

Accepted Answer

A) 0 A 
B) 0 × 108 A 
C) 0 nA 
A) 0 A 
B) 0 × 108 A 
C) 0 nA

Question 15

A light bulb operating at a dc voltage of 120 V has a resistance of 200 Ω.How much power is dissipated in this bulb?

Accepted Answer

A) 100 W 
B) 60 W 
C) 72 W 
D) 14 mW 
E) 7.2 W 
A) 100 W 
B) 60 W 
C) 72 W 
D) 14 mW 
E) 7.2 W

Question 16

Four resistors having resistances of 20 Ω,40 Ω,60 Ω,and 80 Ω are connected in series across an ideal 50-V dc source.What is the current through each resistor?

Accepted Answer

A) 0.25 A 
B) 0.50 A 
C) 0.75 A 
D) 2.0 A 
E) 4.0 A 
A) 0.25 A 
B) 0.50 A 
C) 0.75 A 
D) 2.0 A 
E) 4.0 A

Question 17

Four unequal resistors are connected in a parallel with each other.Which one of the following statements is correct about this combination?

Accepted Answer

A) The equivalent resistance is less than that of the smallest resistor. 
B) The equivalent resistance is equal to the average of the four resistances. 
C) The equivalent resistance is midway between the largest and smallest resistance. 
D) The equivalent resistance is more than the largest resistance. 
E) None of the other choices is correct. 
A) The equivalent resistance is less than that of the smallest resistor. 
B) The equivalent resistance is equal to the average of the four resistances. 
C) The equivalent resistance is midway between the largest and smallest resistance. 
D) The equivalent resistance is more than the largest resistance. 
E) None of the other choices is correct.

Question 18

If V = 40 V and the battery is ideal,what is the potential difference across R1 in the figure?

Accepted Answer

A) 6.7 V 
B) 8.0 V 
C) 10 V 
D) 20 V 
A) 6.7 V 
B) 8.0 V 
C) 10 V 
D) 20 V

Question 19

A light bulb operating at 110 V draws 1.40 A of current.What is its resistance?

Accepted Answer

A) 12.7 Ω 
B) 78.6 Ω 
C) 109 Ω 
D) 154 Ω 
A) 12.7 Ω 
B) 78.6 Ω 
C) 109 Ω 
D) 154 Ω

Question 20

A simple circuit has a total resistance of 30 Ω.If a 2.0-A current is maintained in this circuit,how much energy is dissipated in this circuit in 4.0 seconds?

Accepted Answer

A) 24 J 
B) 4.8 J 
C) 48 J 
D) 480 J 
E) 6.0 J 
A) 24 J 
B) 4.8 J 
C) 48 J 
D) 480 J 
E) 6.0 J

Exam 17: Dc Circuits

Draw a circuit consisting of a battery connected to two resistors,R1 and R2,in series with each other and a capacitor C connected across the resistors.

A charge of 12 C passes through an electroplating apparatus in 2.0 min.What is the average current through the apparatus?

Determine the current through the 12-Ω resistor for the circuit shown in the figure assuming that the batteries are ideal.

A battery has an emf ε = 43.0 V and an internal resistance r = 8.0 Ω,as shown in the figure.When the terminal voltage Vab is equal to 34.0 V,the current through the battery,including its direction,is closest to

A battery you buy at the store has an internal emf of 3.0 V.If it has an internal resistance of 14.0Ω14.0 \Omega14.0Ω what current will this battery put out if it is short-circuited?

What is the potential drop from point A to point B for the circuit shown in the figure? The battery is ideal,and all the numbers are accurate to two significant figures.

For the graph shown in the figure,what physical quantity does the slope of the graph represent for ohmic material?

A certain metal has a resistivity of 1.68 × 10-8 Ω ∙ m.You have a long spool of wire made from this metal.If this wire has a diameter of 0.15 mm,how long should you cut a segment so its resistance will be 15 Ω?

A toaster is rated at 800 W when operating at 120 V dc.What is the resistance of its heating element?

When different resistors are connected in parallel across an ideal battery,we can be certain that

The power rating of a 400-Ω resistor is 0.800 W. (a)What is the maximum safe voltage across this resistor? (b)What is the maximum current the resistor can safely draw?

The resistivity of a 1.0 m long copper wire is 1.72 × 10-8 Ω ∙ m and its cross sectional area is 2.0 × 10-6 m2.If the wire carries a current of 0.20 A,what is the voltage across the wire?

Identical ideal batteries are connected in different arrangements to the same light bulb,as shown in the figure.For which arrangement will the bulb shine the brightest? A B C

How much current will be flowing through a 57.0−m57.0 - \mathrm { m }57.0−m length of copper wire with radius 0.0 mm0.0 \mathrm {~mm}0.0 mm if it is connected to a source supplying 62.0 V ? 62.0 \mathrm {~V} \text { ? }62.0 V ? The resistivity of the metal is 1.68 × 10-8 Ω ∙ m.

A light bulb operating at a dc voltage of 120 V has a resistance of 200 Ω.How much power is dissipated in this bulb?

Four resistors having resistances of 20 Ω,40 Ω,60 Ω,and 80 Ω are connected in series across an ideal 50-V dc source.What is the current through each resistor?

Four unequal resistors are connected in a parallel with each other.Which one of the following statements is correct about this combination?

If V = 40 V and the battery is ideal,what is the potential difference across R1 in the figure?

A light bulb operating at 110 V draws 1.40 A of current.What is its resistance?

A simple circuit has a total resistance of 30 Ω.If a 2.0-A current is maintained in this circuit,how much energy is dissipated in this circuit in 4.0 seconds?

Introduction

Kinematics: Motion in One Dimension

Newtonian Mechanics

Applying Newtons Laws

Circular Motion

Impulse and Linear Momentum

Work and Energy

Extended Bodies at Rest

Rotational Motion

Gases

Static Fluids

Fluids in Motion

First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge force and Energy

The Electric Field

Magnetism

Electromagnetic Induction

Vibrational Motion

Mechanical Waves

Reflection and Refraction

Mirrors and Lenses

Wave Optics

Electromagnetic Waves

Special Relativity

Quantum Optics

Atomic Physics

Nuclear Physics

Particle Physics

Filters

Draw a circuit consisting of a battery connected to two resistors,R₁ and R₂,in series with each other and a capacitor C connected across the resistors.

A battery has an emf ε = 43.0 V and an internal resistance r = 8.0 Ω,as shown in the figure.When the terminal voltage V_ab is equal to 34.0 V,the current through the battery,including its direction,is closest to

A battery you buy at the store has an internal emf of 3.0 V.If it has an internal resistance of $14.0 \Omega$ what current will this battery put out if it is short-circuited?

A certain metal has a resistivity of 1.68 × 10^-8 Ω ∙ m.You have a long spool of wire made from this metal.If this wire has a diameter of 0.15 mm,how long should you cut a segment so its resistance will be 15 Ω?

The resistivity of a 1.0 m long copper wire is 1.72 × 10^-8 Ω ∙ m and its cross sectional area is 2.0 × 10^-6 m².If the wire carries a current of 0.20 A,what is the voltage across the wire?

How much current will be flowing through a $57.0 - \mathrm { m }$ length of copper wire with radius $0.0 \mathrm {~mm}$ if it is connected to a source supplying $62.0 \mathrm {~V} \text { ? }$ The resistivity of the metal is 1.68 × 10^-8 Ω ∙ m.

If V = 40 V and the battery is ideal,what is the potential difference across R₁ in the figure?