Physics 122
Lab #2
Electric Fields
Objective: To discover the shape of electric fields surrounding point charges and also around more
complicated shapes. You will also learn a little bit about Electric Potentials for use later this quarter.
Prediction: Tw
Physics 122
Quiz #3
Name:_
Problem #1 (10 points): A sphere of radius 1 cm has a charge of +20 C distributed uniformly
throughout it's volume. Answer the following questions about the charge and electric field.
a) Is the sphere made of conducting or insul
Physics 122
Worksheet #20
Name:_
Problem #1 (10 points): An AC generator turns at a rate of 50 Hz and produces a maximum
voltage of 150 V. The generator is connected to a stepdown transformer in which the primary
has 2500 turns and the secondary has 500
Physics 122
Worksheet #19
Name:_
Problem #1 (10 points): An RL circuit contains a 10 V DC battery with two parallel branches.
The first parallel branch contains a 75 resistor. The second parallel branch has a 25 resistor
and a 20 H inductor.
a) Find the c
Physics 122
Worksheet #18
Name:_
Problem #1 (10 points): Two 10 cm long parallel wires are directly above each other and have
equal currents that flow in the opposite direction. The wires are each 2 mm in diameter and are
separated by a center to center d
Physics 122
Worksheet #16
Name:_
Problem #1 (10 points): An 15 keV electron is traveling to the right and encounters an electric
field of magnitude 150 N/C and a magnetic field of magnitude 2.4 T. If the electric field points
down and the magnetic field p
Physics 122
Worksheet #17
Name:_
Problem #1 (10 points): A battery with an EMF of 12 V and an internal resistance of 0.3 is
connected to a copper wire of diameter 0.4 mm and total length of 73 cm. The wire is bent into
an equilateral triangle and placed i
Physics 122
Worksheet #15
Name:_
Problem #1 (10 points): If a circuit contains a resistor, a battery, and a capacitor with the
following values R = 126 , V = 12 V, and C = 0.42 F, then answer the following questions
about the circuit.
a) What is the lengt
Physics 122
Worksheet #13
Name:_
Problem #1 (10 points): Answer the following questions about the circuit shown below. The
values of the resistances are R 1 = 14 , R2 = 10 , and R3 = 5.5 . The battery voltage is 5 V.
a) Calculate the current running throu
Physics 122
Worksheet #14
Name:_
Problem #1 (10 points): Analyze the following circuit and find the current through each
resistor. The resistors have the following resistances: R 1 = 21 , R2 = 16 , R3 = 7 , R4 =
14 and
R5
V
R5 = 12 . The battery voltage i
Physics 122
Worksheet #8
Name:_
Problem #1 (20 points): A spherical nonconducting sphere has a radius of 5 cm and a total
charge of 20 C placed upon it (the charge is uniformly distributed throughout it's volume). A
second nonconducting sphere with an i
Physics 122
Worksheet #9
Name:_
Problem #1 (10 points): An infinite nonconducting plate has an area charge density () of
5 x 108 C/m2 uniformly distributed over it's surface. An infinite nonconducting line charge
with uniform surface density 6.7 x 10
Physics 122
Quiz #2
Name:_
Problem #1 (10 points): A dipole is shown below. Calculate the electric field due to the dipole
at a distance d above the dipole as shown. The distance between the dipoles is 1 mm and the
distance d is equal to 2 mm.
E = ?
d
+q
Physics 122
Quiz #4
Name:_
Problem #1 (20 points): A point charge of charge +3Q is nested inside two conducting spherical
shells as shown in the picture below. The inner shell has a total charge of +3Q with a radius of A
and the outer shell has a total ch
Physics 122
Sample Quiz #5 Solutions
Name:_
Problem #1 (10 points): Three point charges are arranged as in the diagram below. The distance
d is 1 cm and the charges are aligned as a right triangle. The values of the charges are:
q1 = 5 C, q2 = 10 C, q3 =
Physics 122
Sample Quiz #7 Solutions
Name:_
Capacitance and Magnetic Fields
Problem #1 (10 points): A capacitor is fully charged using the circuit below. After charging,
the battery is removed and the loose ends of the wire are connected together. Answer
Part 1: The Electrometer
Apparatus: Electrometer; 2 Aligator clips; connecting wires; a battery
Description: Using the alligator clips, connect the battery with the electrometer.
Result:
Experiment #
Stamped Voltage (V)
Recorded Value (V)
Difference in Va
Physics 122
Quiz #8
Name:_
Magnetic Fields
Problem #1 (10 points): Two parallel wires have a current of 3 A running in opposite
directions over their 10 meter lengths. The wires are 1.5 cm apart. A cross sectional picture of
the wires is shown below.
a) F
Physics 122
Sample Quiz #6 Solutions
Name:_
DC Circuits
Problem #1 (10 points): The circuit shown below has three resistors and two batteries with
voltages and resistances as indicated.
+
V
1
i2
R2
V
2
R1
R3
i1
+

i3
a) On the circuit, label the positive
Physics 122
Quiz #8
Name:_
Magnetic Fields
Problem #1 (10 points): Two parallel wires have a current of 3 A running in opposite
directions over their 10 meter lengths. The wires are 1.5 cm apart. A cross sectional picture of
the wires is shown below.
a) F
Physics 122
Quiz #7
Name:_
Capacitance and Magnetic Fields
Problem #1 (10 points): A capacitor is fully charged using the circuit below. After charging,
the battery is removed and the loose ends of the wire are connected together. Answer the
questions bel
Physics 122
Quiz #6
Name:_
DC Circuits
Problem #1 (10 points): The circuit shown below has three resistors and two batteries with
voltages and resistances as indicated.
R2
V
1
R1
V
2
R3
a) On the circuit, label the positive and negative sides of the batte
Physics 122
Sample Quiz #4 Solutions
Name:_
Problem #1 (20 points): A point charge of charge +3Q is nested inside two conducting spherical
shells as shown in the picture below. The inner shell has a total charge of +3Q with a radius of A
and the outer she
Physics 122
Quiz #5
Name:_
Problem #1 (10 points): Three point charges are arranged as in the diagram below. The distance
d is 1 cm and the charges are aligned as a right triangle. The values of the charges are:
q1 = 5 C, q2 = 10 C, q3 = 15 C.
a) What amo
Physics 122
Sample Quiz #3 Solutions
Name:_
Problem #1 (10 points): A sphere of radius 1 cm has a charge of +20 C distributed uniformly
throughout it's volume. Answer the following questions about the charge and electric field.
a) Is the sphere made of co
Physics 122
Worksheet #10
Name:_
Problem #1 (10 points): Find the ratio of the capacitance of a spherical capacitor to a
cylindrical capacitor if both have an internal radius of 12 mm and an external radius of 18 mm
with air in the gap between. The length
Physics 122
Challenge Question #2
Worth: +10 Homework Points
A metallic wire of radius 1 mm is contained within a metallic cylindrical shell of inner radius of
5.0 mm and outer radius of 5.5 mm. The metallic wire has a total charge of  40 C per 1 meter
o
Physics 122
Lab #3
Capacitors
Objective: The objective of this laboratory is to allow you to see how capacitors work. You will be building
circuits containing capacitors and observing how connecting them in series and parallel causes differences in
chargi