Electricity
Thermal Physics
Magnetism
Optics
WildCard
100
A series circuit is characterized by the fact that there is a single pathway by which charge can travel from the + terminal to the - terminal of a source of potential difference.
True
100
The kelvin temperature of an object is a measure of A. the total energy of the molecules of the object. B. the total kinetic energy of the molecules of the object. C. the maximum energy of the molecules of the object. D. the average kinetic energy of the molecules of the object.
D
100
A positively charged particle in a uniform magnetic field moves in a circular path in the clockwise direction, parallel to the plane of the page. In what direction do the magnetic field lines point? (A) Out of the page (B) Into the page (C) To the left (D) To the right (E) In a clockwise pattern parallel to the plane of the page
A
100
The best definition of refraction is ____. a. passing through a boundary b. bouncing off a boundary c. changing speed at a boundary d. changing direction when crossing a boundary
d
100
Which of the following best describes the image formed by a concave mirror when the object is located somewhere between the focal point (F) and the center of curvature (C) of the mirror? a. virtual, upright and enlarged b. real, inverted and reduced c. virtual, upright and reduced d. real, inverted and enlarged
D
200
The potential energy possessed per unit of charge at any given location is referred to as the __________
What is electric potential
200
The temperature of an ideal gas is reduced. Which one of the following statements is true? A. The molecules collide with the walls of the container less frequently. B. The molecules collide with each other more frequently. C. The time of contact between the molecules and the wall is reduced. D. The time of contact between molecules is decreased.
A
200
A charged particle is moving in a circular orbit in a magnetic field. If the strength of the magnetic field doubles, how does the radius of the particle’s orbit change? (A) It is quartered (B) It is halved (C) It is unchanged (D) It is doubled (E) It is quadrupled
B
200
A ray of light in air is incident on an air-to-glass boundary at an angle of 30. degrees with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal? a. 56 degrees b. 46 degrees c. 30. degrees d. 18 degrees
d
200
Which of the following statements are true statements about electric field? Choose all that apply. a. The electric field strength created by object A is dependent upon the separation distance from object A. b. The electric field strength created by object A is dependent upon the charge on object A. c. The electric field strength created by object A is dependent upon the charge of the test object used to measure the strength of the field. d. The electric field strength about charged Object A is the force per charge experienced by a test charge placed at some location about Object A. e. As the distance from Object A is doubled, the electric field strength created by object A increases by a factor of 4.
A,B,D
300
A battery is needed in the circuit of your flashlight so that ____. a. charge is provided to the wires b. the energy of the light is balanced by the battery c. an exothermic, light-creating reaction is possible d. an electric potential difference is maintained across the circuit e. electrons are supplied in order to light the bulb
d
300
An ideal gas is enclosed in a sealed container. Upon heating, which property of the gas does not change? (A) Volume (B) Pressure (C) The average speed of the molecules (D) The rate of collisions of the molecules with each other (E) The rate of collisions of the molecules with the walls of the container
A
300
What is the magnetic force experienced by a negatively charged particle of 1.0 C that is moving upward at a velocity of 2.0 x 10^3 m/s in a magnetic field of strength 4.0 x 10^–4 T, directed into the page? (A) 0.8 N to the left (B) 0.8 N to the right (C) 2.0 x 10^–7 N to the left (D) 2.0 x 10^–7 N to the right (E) 5.0 x 10^6 N to the left
B
300
A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from the block? a. speed is less than when in glass b. speed is less than before it entered glass c. speed is same as that in glass d. speed is same as that before it entered glass
d
300
Two identical positive charges of +Q are 1 m apart. What is the magnitude and direction of the electric field at point A, 0.25 m to the right of the left-hand charge? (A) 3/4 kQ to the right (B) 128/9 kQ to the left (C) 160/9 kQ to the left (D) 160/9 kQ to the right (E) 128/9 kQ to the right
E
400
If a third resistor, identical to two other resistors already in series, is added in series with the first two, then the overall resistance of the circuit will ____ and the overall current will ____.
increase,decrease
400
24 J of heat are added to a gas in a container, and then the gas does 6 J of work on the walls of the container. What is the change in internal energy for the gas? A) –30 J B) –18 J C) 4 J D) 18 J E) 30 J
D
400
A current-carrying wire in a magnetic field is subject to a magnetic force. If the current in the wire is doubled, what happens to the magnetic force acting on the wire? (A) It is quartered (B) It is halved (C) It is unchanged (D) It is doubled (E) It is quadrupled
D
400
A 3.0 cm tall object is placed along the principal axis of a thin converging lens of 30.0 cm focal length. If the object distance is 40.0 cm, which of the following best describes the image distance and height, respectively? a. 17.3 cm and 7.0 cm b. 120. cm and -9.0 cm c. 17.3 cm and 1.3 cm d. 120. cm and -1.0 cm
B
400
A wire in the shape of an equilateral triangle with sides of length 1.00 m sits in a magnetic field of 2.00 T, pointing to the right, parallel to the face of the wire. What is the magnitude of the magnetic flux through the triangle? (A) 0 Wb (B) 1.00 Wb (C) 1.73 Wb (D) 2.00 Wb (E) 3.46 Wb
A
500
A high resistance light bulb and a low resistance light bulb are connected in series to a 6-Volt pack of batteries. Which of the two light bulbs will shine the brightest?
high resistance
500
An ideal gas is heated in a closed container at constant volume. Which of the following properties of the gas increases as the gas is heated? A) The atomic mass of the atoms in the molecules B) The number of molecules C) The density of the gas D) The pressure exerted by the molecules on the walls of the container E) The average space between the molecules
D
500
What should one do to maximize the magnitude of the magnetic force acting on a charged particle moving in a magnetic field? I. Maximize the strength of the magnetic field II. Minimize the particle’s velocity III. Ensure that the particle is moving in the same direction as the magnetic field lines (A) I only (B) I and II only (C) I and III only (D) II and III only (E) I, II, and III
A
500
Which of the following best describes the image for a thin converging lens that forms whenever the object is at a distance less than one focal length from the lens? a. inverted, enlarged and real b. upright, enlarged and virtual c. upright, reduced and virtual d. inverted, reduced and real
B
500
A device that transforms mechanical energy into electrical energy is called a: (A) Transformer (B) Inductor (C) Motor (D) Galvanometer (E) Generator
E
M
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