Resonant Circuit Lab Report

How This Custom Writing Service Works

1. Place your order

Provide all instructions about the type of paper, length, deadline and pay.

2. Thorough research

Our team of professional writers conduct in-depth research on the topic to extract information from relevant sources.

3. Writing and proofreading

The experienced writers knit together all ideas into an original paper. Our editors go through the paper to correct any errors.

4. Product Delivery

You get your completed paper in your email. In case you need any corrections, we do ammendments free of charge.

Step 1 of 2

  • Price: $0.00

Why Buy Dissertations from us?

100% Original writing

No plagiarism. Original content written from scratch just for you. and custom free plagiarism report

Affordable writing service

Get your paper at a cheaper price than our competitors. Save money.

Timely delivery of orders

Never miss your submission deadlines again. We keep time & help you smile.

24/7 Customer support

Contact customer support or your writer any time for updates, drafts, etc. Call, Text, Whatsapp.

100% Private & Confidential

Your connection is private, your personal & payment information is secure

Need help placing your order?

Let nothing stop you from enjoying the best writing services. Save your time and focus on other aspects of your studies as professional writers work on your paper.

Resonant Circuit Lab Report

Resonant circuit lab report. CLICK TO ORDER YOUR PAPER


To construct and observe the operation of series and parallel resonant circuits

Theory overview

A resonant circuit which is in series consists of a capacitor, a resistor and an indicator connected in a loop. At some frequency the inductive and capacitive reactances magnitudes becomes equal and since they are opposite each other they effectively cancel each other. This makes the circuit to be purely resistive as it only ‘sees’ the resistor. Therefore at the resonance frequency the current becomes maximum. At any lower or higher frequency, the net difference between XC and XL   should be summed with the value of the resistor; this produces higher impedance and hence lowers the circuit current. Since this is a simple loop the voltage across the resistor will be directly proportional to the circuit current. Subsequently, the voltage across the resistor must be maximum at the circuit resonant frequency and reduces with the increase or decrease of frequency. The resistor rating at resonance sets the highest/maximum current and subsequently has a big voltage effect that is developed across the inductor and capacitor. The circuit Q is given by Q=X/R, i.e. the ratio of circuit resistance and resonant reactance.


Signal generator, capacitor, inductor, resistance box, and oscilloscope.


Figure 1: Circuit 1, L in series with R

Figure 2: Circuit 2, L in parallel with R


  1. Circuit one was set up as shown the in the above diagram.
  2. Voltage readings at Y were taken in steps of 1,2,5 starting from frequency of 100Hz to 1MHz
  3. Extra readings around the resonance point were taken (where Y1 is a maximum)
  4. Voltage across the capacitor at resonance was measured.
  5. Repeat was done with the resistance reduced by a half.
  6. Circuit 2 was also set as shown in diagram 2 above.
  7. Voltage at Y1 at 1, 2, 5 steps from 100Hz to 1MHz were taken.
  8. Extra readings around the resonance point were taken (where Y1 is a minimum)


The following results were obtained from the experiments.

Table 1: Results for the inductor in parallel connection

f  (Hz) V, Resistance =100Ω V Resistance =800 Ω
100 1 2.25
200 0.5 1.75
300 0.125 0.75
500 0.5 2.5
600 1.25 2.5
700 2 2.5
800 2.5 2.5
900 2.5 2.5
1000 2.5 2.5


Table 2: Results for the series connection

F (Hz) V,  R=100 V,  R = 700
100 0.15 1
200 0.5 3
300 1.2 3.5
500 0.5 3
600 0.2 1.5
700 0.1 1
800 0.08 0.6
900 0.04 0.2
1000 0.03 0.1

Plot graphs of voltage at Y1 against frequency on a log/linear scale.

Figure 3: Graph of Voltage against frequency for parallel connection

Calculation of Q of circuit 1 with each resistance

Calculations for parallel connection

For R = 100 Ω

From the graph f resonance = 300 Hz.

Q =  where R = 100 and c = 0.22

Q R 100 =  = 22.1 x 10-6 Coulombs

For R = 800 Ω

Since from the graph f resonance = 300 Hz.

Q =  where R = 800 and c = 0.22

Q R 800 =  = 3.01 x 10-6 Coulombs

At resonance in a RLC circuit voltage is at the minimum value


Figure 4: Graph of Voltage against frequency for series connection

Parallel connection calculations

For R = 100 Ω

From the graph f resonance = 300 Hz. It is noted that this value is similar to that obtained for the series connection.

Q =  where R = 100 and c = 0.22

Q R 100 =  = 22.1 x 10-6 Coulombs

For R = 700 Ω

Since from the graph f resonance = 300 Hz.

Q =  where R = 800 and c = 0.22

Q R 800 =  = 3.44 x 10-6 Coulombs

At resonance the voltage in RLC series circuit is maximum depending on the kind of resistors used, the larger the resistor the larger the value of voltage at resonance and vice versa. In the graph above it can be seen that resonance frequency is 300Hz. The circuit accepts a signal at the frequency of 300Hz and rejects all other frequencies.


From the above graphs it can be concluded that the resonance frequency is the same irrespective of the connection and value of resistance connected across the circuit. However, the charge (Q) which represents the quality factor of the circuit changes depending on the value of resistance. The higher the resistance the lower the value of charge and the lower the resistance the higher the value becomes. Therefore, the value of Q worked out is not consistent with the various definitions.


Floyd, Thomas L… Electric circuits fundamentals. 4th ed. Upper Saddle River, N.J.: Prentice Hall, 1998. Print.

Jackson, Herbert W… Introduction to electric circuits. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1965. Print.

Nahvi, Mahmood, and Joseph Edminister.Schaum’s outline of theory and problems of electric circuits. 4th ed. New York: McGraw-Hill, 2003. Print.

Nahvi, Mahmood, and Joseph Edminister.Electric circuits. New York: McGraw-Hill, 2004. Print.

Types of Academic Papers

Research Paper
Reaction Paper
Lab Report
Book Report
Book Review
Movie Review
Synthesis Paper
Review of the Literature
Research Proposal
Thesis Proposal
Dissertation Proposal
Annotated Bibliography
Article Critique
Term Paper
Case Study
Capstone Project
Presentation Design
Mathematical Problem
Mind Game
Tricky Questions

Dissertation Chapters

Dissertation Abstract

Dissertation Introduction

Dissertation Literature Review

Dissertation Methodology

Dissertation Results

Dissertation Discussion

best essay writing services

Types of Essays

Expository essay
Analytical essay
Persuasive essay
Narrative essay
Definition Essay
Descriptive essay
Process Essay
Personal essay
Admission essay
Compare and contrast essay
Cause and effect essay
Critical analysis essay

Order Your Custom Paper Now

Step 1 of 2

  • Price: $0.00

Artificial Intelligence
Biological Sciences
Business Management
Business Studies
Chemical Engineering
Civil Engineering
Computer Science

Consumer Science
Cultural Studies
Earth Sciences
Electrical Engineering
English Language
Food Science
Gender Studies

Human Resource Management
Mechanical Engineering
Military Sciences
Museum Studies

Political Science
Public Administration
Religious Studies
Social Work
Software Engineering
Space Sciences
Systems Science
Veterinary Medicine

Write My Dissertation offers top-notch customer support services. 

When working on your dissertation paper, expect to find us online via Live Chat 24/7/265. 

Our customer support agents are always ready to listen to you and deliver a quality dissertation.

Be free to contact the customer support team if you have any questions or comments.

How To Order PhD dissertation

Could you help me write my dissertation?

Yes. That’s our work to write a dissertation.

Use the green order form to order the entire dissertation.

Instead of pay someone randomly selected from the internet, it’s good to use a reputable company like WMD which specializes in dissertation services.

It’s now easy to buy academic papers online. You can phone place order, fill out the order form, pre order product and hire someone to write your paper just like that. Expect to get great work, just like many others have, for your first order and all others.

You’ll experience the best, get your order 100% unique and delivered in time (timely delivery).

Write my dissertation delivers custom writing services to customers from all states in the USA. Our services are provided in the English language. You can find the best custom dissertation services if you are from any of the following states or territories in the United States of America: 

Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Minor Outlying Islands, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, U.S. Virgin Islands, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

If you need dissertation writing help in the English language, then we’ve got you covered.

Our clients are mainly English speakers  from: Australia, New Zealand, United Kingdom, United States, Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Dominica, Federation of Saint Christopher and Nevis. Others include Fiji, Ghana, Grenada, Guyana, Ireland, Jamaica, Kenya, Liberia, Nigeria, Papua New Guinea, Saint Lucia, Saint Vincent and the Grenadines, Sierra Leone, Singapore, South Africa, Trinidad and Tobago.