Question 1

What is the maximum current that can be drawn from a 1.50-V battery with an internal resistance of 0.30 ohm?

Accepted Answer

A) 2.5 A 
B) 5.0 A 
C) 0.45 A 
D) 0.20 A 
E) 4.5 A 
A) 2.5 A 
B) 5.0 A 
C) 0.45 A 
D) 0.20 A 
E) 4.5 A

Question 2

A galvanometer has a coil with a resistance of 24.0 Ω,and a current of 180 μA causes it to deflect full scale.If this galvanometer is to be used to construct an ammeter that can read up to 10.0 A,what shunt resistor is required?

Accepted Answer

A) 123 µΩ 
B) 234 µΩ 
C) 342 µΩ 
D) 432 µΩ 
E) 423 µΩ 
A) 123 µΩ 
B) 234 µΩ 
C) 342 µΩ 
D) 432 µΩ 
E) 423 µΩ

Question 3

A galvanometer G has an internal resistance rg.An AMMETER is constructed by incorporating the galvanometer and an additional resistance Rs.Which one of the figures below is the most appropriate circuit diagram for the ammeter?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 4

When a 20.0-ohm resistor is connected across the terminals of a 12.0-V battery,the voltage across the terminals of the battery falls by 0.300 V.What is the internal resistance of this battery?

Accepted Answer

A) 3.60 Ω 
B) 1.56 Ω 
C) 0.98 Ω 
D) 0.30 Ω 
E) 0.51 Ω 
A) 3.60 Ω 
B) 1.56 Ω 
C) 0.98 Ω 
D) 0.30 Ω 
E) 0.51 Ω

Question 5

For the circuit shown in the figure,what current does the ideal ammeter read?

Accepted Answer

A) 0.033 A 
B) 0.078 A 
C) 0.23 A 
D) 0.12 A 
A) 0.033 A 
B) 0.078 A 
C) 0.23 A 
D) 0.12 A

Question 6

A multiloop circuit is shown in the figure.It is not necessary to solve the entire circuit.Compared to the polarity shown in the figure,the emf ε1 is closest to

Accepted Answer

A) -5 V. 
B) 5 V. 
C) 45 V. 
D) 51 V. 
E) -51 V. 
A) -5 V. 
B) 5 V. 
C) 45 V. 
D) 51 V. 
E) -51 V.

Question 7

For the circuit shown in the figure,what is the current through resistor R1?

Accepted Answer

A) 0.071 A 
B) 0.13 A 
C) 0.029 A 
D) 0.016 A 
A) 0.071 A 
B) 0.13 A 
C) 0.029 A 
D) 0.016 A

Question 8

A 1500-W heater is connected to a 120-V line.How much heat energy does it produce in 2.0 hours?

Accepted Answer

A) 1.5 kJ 
B) 3.0 kJ 
C) 0.18 MJ 
D) 11 MJ 
E) 18 MJ 
A) 1.5 kJ 
B) 3.0 kJ 
C) 0.18 MJ 
D) 11 MJ 
E) 18 MJ

Exam 28: Fundamentals of Circuits

What is the maximum current that can be drawn from a 1.50-V battery with an internal resistance of 0.30 ohm?

A galvanometer has a coil with a resistance of 24.0 Ω,and a current of 180 μA causes it to deflect full scale.If this galvanometer is to be used to construct an ammeter that can read up to 10.0 A,what shunt resistor is required?

A galvanometer G has an internal resistance rg.An AMMETER is constructed by incorporating the galvanometer and an additional resistance Rs.Which one of the figures below is the most appropriate circuit diagram for the ammeter?

When a 20.0-ohm resistor is connected across the terminals of a 12.0-V battery,the voltage across the terminals of the battery falls by 0.300 V.What is the internal resistance of this battery?

For the circuit shown in the figure,what current does the ideal ammeter read?

A multiloop circuit is shown in the figure.It is not necessary to solve the entire circuit.Compared to the polarity shown in the figure,the emf ε1 is closest to

For the circuit shown in the figure,what is the current through resistor R1?

A 1500-W heater is connected to a 120-V line.How much heat energy does it produce in 2.0 hours?

Concepts of Motion

Kinematics in One Dimension

Vectors and Coordinate Systems

Kinematics in Two Dimensions

Force and Motion

Dynamics I: Motion Along a Line

Newtons Third Law

Dynamics II: Motion in a Plane

Work and Kinetic Energy

Interactions and Potential Energy

Impulse and Momentum

Rotation of a Rigid Body

Newtons Theory of Gravity

Fluids and Elasticity

Oscillations

Traveling Waves

Superposition

A Macroscopic Description of Matter

Work, heat, and the First Law of Thermodynamics

The Micromacro Connection

Heat Engines and Refrigerators

Electric Charges and Forces

The Electric Field

Gausss Law

The Electric Potential

Potential and Field

Current and Resistance

The Magnetic Field

Electromagnetic Induction

Electromagnetic Fields and Waves

Ac Circuits

Wave Optics

Ray Optics

Optical Instruments

Relativity

The Foundations of Modern Physics

Quantization

Wave Functions and Uncertainty

One-Dimensional Quantum Mechanics

Atomic Physics

Nuclear Physics

Filters

A galvanometer G has an internal resistance r_g.An AMMETER is constructed by incorporating the galvanometer and an additional resistance R_s.Which one of the figures below is the most appropriate circuit diagram for the ammeter?

A multiloop circuit is shown in the figure.It is not necessary to solve the entire circuit.Compared to the polarity shown in the figure,the emf ε₁is closest to

For the circuit shown in the figure,what is the current through resistor R₁?