A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I1 if the batteries are ideal.(It is not necessary to solve the entire circuit.)

A) 0 A B) +0.2 A C) +0.4 A D) -0.2 A E) -0.4 A A) 0 A B) +0.2 A C) +0.4 A D) -0.2 A E) -0.4 A

If emf of the ideal battery is V = 4.0 V,what is the current through R6 for the circuit shown in the figure?

A) 0.0077 A B) 0.017 A C) 0.040 A D) 4.0 A A) 0.0077 A B) 0.017 A C) 0.040 A D) 4.0 A

A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I2 if the batteries are ideal.(It is not necessary to solve the entire circuit.)

A) +0.1 A B) +0.3 A C) +0.5 A D) -0.1 A E) -0.3 A A) +0.1 A B) +0.3 A C) +0.5 A D) -0.1 A E) -0.3 A

Exam 17: Dc Circuits

The figure shows electrons passing through a resistor.The arrow shows the direction in which the electrons are moving.Which of the following statements are correct? (There could be more than one correct choice.)

(Multiple Choice)

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Question 181

A 22-A current flows into a parallel combination of 4.0-Ω,6.0-Ω,and 12-Ω resistors.What current flows through the 12-Ω resistor?

(Multiple Choice)

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Question 182

Kirchhoff's loop rule is a statement of

(Multiple Choice)

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Question 183

A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I₁ if the batteries are ideal.(It is not necessary to solve the entire circuit.)

(Multiple Choice)

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Question 184

If emf of the ideal battery is V = 4.0 V,what is the current through R₆ for the circuit shown in the figure?

(Multiple Choice)

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Question 185

During a period of high power demand,the voltage output of the power company is reduced by 5.0%.By what percentage is the power in a resistor decreased?

(Multiple Choice)

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Question 186

A 120-m long metal wire having a resistivity of 1.68 × 10^-8 Ω ∙ m has a resistance of 6.0 Ω.What is the diameter of the wire?

(Multiple Choice)

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Question 187

A number of resistors are connected across points A and B as shown in the figure.What is the equivalent resistance between points A and B?

(Multiple Choice)

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Question 188

The nichrome heating element in an electric drier operates on 240 V and generates thermal energy at the rate of 2.0 kW.The heating element shorts out and,in repairing it,the repairman shortens the nichrome wire by 10%.(Assume the temperature is unchanged.In reality,the resistivity of the wire will depend on its temperature.)What effect will the repair have on the power dissipated in the heating element?

(Multiple Choice)

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Question 189

The following three appliances are connected in parallel across an ideal 120-V dc power source: 1200-W toaster,650-W coffee pot,and 600-W microwave.If all were operated at the same time what total current would they draw from the source?

(Multiple Choice)

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Question 190

Draw a circuit with two batteries,a resistor between them,and a capacitor in parallel with the resistor.The batteries are connected negative pole to positive pole.

(Multiple Choice)

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Question 191

A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I₂ if the batteries are ideal.(It is not necessary to solve the entire circuit.)

(Multiple Choice)

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Question 192

A battery has an emf ε = 12 V and an internal resistance r = 2.0 Ω,as shown in the figure.When a 3.0-Ω cable is connected across the battery terminals a and b,the rate at which chemical energy in the battery is depleted is closest to

(Multiple Choice)

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Question 193

A kilowatt-hour is equivalent to

(Multiple Choice)

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Question 194

You buy a AA battery in the store,and it is marked 1.5 V.If this marking is strictly accurate,while this battery is fresh

(Multiple Choice)

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Question 195

When there is electric current through an ionic liquid such as salty water,the moving charges are

(Multiple Choice)

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Question 196

What potential difference is required across an 8.0-Ω resistor to cause a 2.0 A current through it?

(Short Answer)

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Question 197

For the circuit shown in the figure,what is the power dissipated in the 2.0-Ω resistor? All the numbers shown are accurate to three significant figures.

(Multiple Choice)

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Question 198

The power rating of a 400-Ω resistor is 0.25 W.What is the maximum voltage you can safely connect across its ends?

(Multiple Choice)

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Question 199

For the circuit shown in the figure,both batteries are ideal.What is the current through the solid wire connecting the upper left and lower left corners of the circuit?

(Multiple Choice)

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Question 200

Showing 181 - 200 of 225

Exam 17: Dc Circuits

The figure shows electrons passing through a resistor.The arrow shows the direction in which the electrons are moving.Which of the following statements are correct? (There could be more than one correct choice.)

A 22-A current flows into a parallel combination of 4.0-Ω,6.0-Ω,and 12-Ω resistors.What current flows through the 12-Ω resistor?

Kirchhoff's loop rule is a statement of

A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I1 if the batteries are ideal.(It is not necessary to solve the entire circuit.)

If emf of the ideal battery is V = 4.0 V,what is the current through R6 for the circuit shown in the figure?

During a period of high power demand,the voltage output of the power company is reduced by 5.0%.By what percentage is the power in a resistor decreased?

A 120-m long metal wire having a resistivity of 1.68 × 10-8 Ω ∙ m has a resistance of 6.0 Ω.What is the diameter of the wire?

A number of resistors are connected across points A and B as shown in the figure.What is the equivalent resistance between points A and B?

The following three appliances are connected in parallel across an ideal 120-V dc power source: 1200-W toaster,650-W coffee pot,and 600-W microwave.If all were operated at the same time what total current would they draw from the source?

Draw a circuit with two batteries,a resistor between them,and a capacitor in parallel with the resistor.The batteries are connected negative pole to positive pole.

A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I2 if the batteries are ideal.(It is not necessary to solve the entire circuit.)

A battery has an emf ε = 12 V and an internal resistance r = 2.0 Ω,as shown in the figure.When a 3.0-Ω cable is connected across the battery terminals a and b,the rate at which chemical energy in the battery is depleted is closest to

A kilowatt-hour is equivalent to

You buy a AA battery in the store,and it is marked 1.5 V.If this marking is strictly accurate,while this battery is fresh

When there is electric current through an ionic liquid such as salty water,the moving charges are

What potential difference is required across an 8.0-Ω resistor to cause a 2.0 A current through it?

For the circuit shown in the figure,what is the power dissipated in the 2.0-Ω resistor? All the numbers shown are accurate to three significant figures.

The power rating of a 400-Ω resistor is 0.25 W.What is the maximum voltage you can safely connect across its ends?

For the circuit shown in the figure,both batteries are ideal.What is the current through the solid wire connecting the upper left and lower left corners of the circuit?

Introduction

Kinematics: Motion in One Dimension

Newtonian Mechanics

Applying Newtons Laws

Circular Motion

Impulse and Linear Momentum

Work and Energy

Extended Bodies at Rest

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Gases

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First Law of Thermodynamics

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The Electric Field

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Special Relativity

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Filters

A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I₁ if the batteries are ideal.(It is not necessary to solve the entire circuit.)

If emf of the ideal battery is V = 4.0 V,what is the current through R₆ for the circuit shown in the figure?

A 120-m long metal wire having a resistivity of 1.68 × 10^-8 Ω ∙ m has a resistance of 6.0 Ω.What is the diameter of the wire?

A multiloop circuit is shown in the figure,but some quantities are not labeled.Find the current I₂ if the batteries are ideal.(It is not necessary to solve the entire circuit.)