﻿ College Physics Labs - Electricity and Mechanics

## Lab Resources

• Laboratory Information
• Safety
Students must follow all posted safety rules and precautions and those announced by the TA...
• Recitation and Lab Schedules
The laboratory associated with this physics course consists of a recitation session (one hour) and a laboratory session (one hour and fifty minutes)...
• Lab Session
Students must be prepared for every lab meeting...
• Lab Report
You will be able to view the lab report template (worksheet) for the experiment you are to do before attending the lab as part of the lab preparation...
• Demo Labs/Exam Review/Problem-Solving Sessions
The lab schedule may list several different types of sessions during the lab meetings...
• Missed Labs
If a student misses a lab (or believes he/she will have to miss a lab due to a university-excused absence), that student should try to find another section during that same week to do the lab experiment...
• Feedback
In order to continue making improvements to this lab manual, feedback from the students is important...
• Appendix

## Lab Manuals

• Resistors in Series and Parallel
• Introduction
Direct current (DC) circuits are characterized by the quantities current, voltage and resistance...
• Objective
In this lab we will measure and analyze currents and voltages for circuits containing a single resistor and also for two resistors in series and for two in parallel.
• Apparatus
0-40 volt DC power supply, 12 volt lightbulb and socket, 150 and 700 ohm resistors, Digital multimeter
• Procedure
The power supply is a source of potential difference (voltage). Locate the DC power supply at your table...
• Worksheet
You will use a hard copy of this worksheet to enter data as you work through the experiment. Print the worksheet and bring it with you to the lab...
• Magnetic Fields and Forces
• Introduction
Moving charges produce a magnetic field...
• Objective
In this lab, we will determine the direction of the magnetic field at the ends of a solenoid wrapped on an iron core and compare the results to the predictions of the right-hand rule...
• Apparatus
Electromagnet (long rod with wire winding on it), DC power supply, Iron filings (in a plastic tray), Compass, Two connecting wires with banana plugs
• Procedure
Locate the DC power supply on your lab table but do not connect it to the circuit yet...
• Worksheet
You will use a hard copy of this worksheet to enter data as you work through the experiment. Print the worksheet and bring it with you to the lab...
• Induced EMF
• Introduction
The magnetic flux through a small element of surface with area ΔA is ΔΦB = B cos ϕ ΔA...
• Objective
In this lab, we will measure the direction of the induced emf in a coil when an electromagnet is inserted into the coil and when it is removed...
• Apparatus
Electromagnet (long rod with wire windings on it), DC power supply, 200-turn pick-up coil, Galvanometer, Two sets of a pair of connecting wires with banana plugs
• Procedure
Locate the DC power supply on your lab table but do not connect it to the circuit yet...
• Worksheet
You will use a hard copy of this worksheet to enter data as you work through the experiment. Print the worksheet and bring it with you to the lab...
• The Reflection and Refraction of Light
• Introduction
A transparent material is characterized by its refractive index, n, where n = c/v...
• Objective
In this lab we will verify the law of reflection and locate the virtual image formed by a flat mirror...
• Apparatus
Optical bench, Incandescent light source, Ray table and base, Slit plate, slit mask and holder, Transparent square plate, Transparent triangular plate, Plane mirror, Protractor, White paper, masking tape and scissors
• Procedure
The basic ray optics setup is shown in Figure 1...
• Worksheet
You will use a hard copy of this worksheet to enter data as you work through the experiment. Print the worksheet and bring it with you to the lab...
• Thin Lenses
• Introduction
The thin-lens equation is 1/s + 1/s' = 1/f where s is the object distance (the distance of the object from the lens), s' is the image distance (the distance of the image from the lens), and f is the focal length of the lens...
• Objective
In this lab we will apply the thin-lens equation to the measurement of the focal length of a converging lens and of a diverging lens.
• Apparatus
Optical bench, Incandescent light source with cross arrow plate, Viewing screen and holder, Converging lens (marked
75 mm) and holder, Diverging lens (marked –150 mm) and holder, Plane mirror
• Procedure
Since the lens does not have zero thickness, all measurements should be made from the plane through the center of the lens...
• Worksheet
You will use a hard copy of this worksheet to enter data as you work through the experiment. Print the worksheet and bring it with you to the lab...
• Thin-Film Interference
• Introduction
Interference occurs when the light of wavelength, λ, from two coherent sources arrives at the same point...
• Objective
In this lab we will analyze thin-film interference data from an experiment done with a thin air wedge between two glass plates...
• Apparatus
Paper, Calculator, Pencil
• Procedure
You will be given representative data from the following experiment and will be asked to analyze it...
• Worksheet
You will use a hard copy of this worksheet to enter data as you work through the experiment. Print the worksheet and bring it with you to the lab...
• Photoelectric Effect
• Introduction
The photoelectric effect is the emission of electrons (called photoelectrons) from the surface of a conductor when light shines on the surface...
• Objective
In this lab we will analyze photoelectric data in order to calculate the work function of the surface, the value of Planck's constant, h, and the threshold frequency.
• Apparatus
In-lab computers, Excel
• Procedure
The following data is an example of measured stopping potential, V0, as a function of the wavelength, λ, of the light...
• Worksheet
You will use a hard copy of this worksheet to enter data as you work through the experiment. Print the worksheet and bring it with you to the lab...