homework help

Thevenin’s  Theorem

Personalized homework help for all major subjects.

Order confidently with our risk free, 14-day money-back guarantee.

  • ✔️ No sign-up required
  • | 🔒 100% Confidential

Our Expert Writers

We proudly boast a team of expert professionals with verified academic credentials, selected for their proven skills and flexibility through a strict process.

Engage with experts from the top universities across the globe.

Get Homework Help Instantly

Say goodbye to homework stress! 📚 Just share your details and we’ll whip up an affordable quote in no time – often within 15 minutes.

Get started now for FREE!

Submit Your Homework

Let our experts help you with your college homework

Thevenin’s theorem states, “the network where RL is connected diagonally with two different terminals also containing the sources of resistors and electromotive forces can be interchanged by series resistor Rth and also by solitary source of electromotive force respectively. Under this electromotive force e.m.f:

  • Eth will be equivalent to possible variance in the network terminals while removing R which is the resistor from the network.
  • Rth which is the resistance number of the series resistors will be equivalent to the network resistance while removing the resistance R from the network.

Hence              I= E /(RL + R th) (cannot be changed)

Let’s explain the stated theorem in detail:


We have to find the current value concluded with the load resistance RL as mentioned in the figure 66 (a). We will monitor the following steps:

  1. We need to redraw the circuit after removing RL after the terminals A and B of the circuit. Please note that the terminals will be an open circuited here.
  2. We will calculate Voc = Eth that is open circuit voltage when RL is removed appearing across A and B which are the open. Please note that Eth is the Thevenin’s voltage here.

Thevenin’s theorem 1

  1. We will find Rth which is the Thevenin’s resistance across the terminals of A and B by short circuiting the battery.

th = R1 x R2 / R1 + R2 (cannot be changed)

  1. We will get the value of current through by reconnecting RL back to the position across the terminals A and B as:

I = E th / ( R th + RL) (cannot be changed)

After discussing the detailed explanation and statement of theorem, let’s understand the same though examples:

Example 1.

Use Thevenin’s theorem and calculate the following value by considering figure. 67

  1. When observed from terminals Land M, calculate the value of m.f. of the network.
  2. When observed into from terminals L and M, calculate the value of equivalent resistance of the network
  3. Calculate current value in the load resistance RL of 30 n.

Thevenin’s theorem 2


Equivalent value of e.m.f. of the network:

Refer Fig. 67.

Before connecting load resistance (RL), the value of the network current is

= 48 / 24 + 6 + 2 = 1.5 A (cannot be changed)

Voltage value diagonally with terminals LM,

oc = Eth = 24 x 1.5 = 38 V. (cannot be changed)

The network will have the value of electromotive force as 38 V till the terminals L and M are connected. (Answer)

Thevenin’s theorem 3

(ii) Correspondent value of resistance in the network :

To calculate the equivalent resistant, assume that 48 V of battery is removed. Please note that the internal resistance is still present under two parallel path between the terminal L and M.

We can look at the resistance from the terminals L and M as:

R1 = R th = 24 x (6 x2) / 24 + (6 + 2) = 6 Q (cannot be changed)

(iii) Current value in RL,I:

As per Fig. 70.

I = E th / R th + RL = 36 / 6 + 30 = 1 A (cannot be changed)

Example 2

Use Thevenins’ theorem to calculate the current value with 50 Ohms value of resistance of the circuit as shows in figure 71

Thevenin’s theorem 4


Let’s assume R4 as the disconnected resistance as briefed in the figure 72 to calculate the value by Thevenin’s theorem

The current value in the circuit which is closed and consists of Rh R3 and

r is,

I = E / R1 + R3 + R = 12 / 7.2 + 40 +0.8 = 0.25 A (With the resistance R4 disconnected)

(cannot be changed)

The Voltage value diagonally to the terminals LM

= V oc = Eth = 0.25 x 40 = 10 V

(cannot be changed)

The corresponding value of the internal resistance in the network with R4disconnected,around the stations L and M will be:

i = R th = R2 =R3 (R1 + R / R1 + r)

= 10 + 40 (7.2 + 0.8) / 40 + 7.2 + 0.8 = 10 + 40 x 8 / 48 = 16.66 Q

The value of the Current through 50 Q (RL) resistances

I = E th / R th + RL = 10 / 16.66 + 50 = 0.15 A

(cannot be changed)


Link of Previous Main Topic:-

Links of Next Electrical Engineering Topics:-

Your Price: $11.00 $10.00

Pricing may change based on requirements

Descriptive text for the image

Get Homework Help In

Maths and Statistics


Humanities & Arts


Essay Writing

How Our Homework Service Works

FAQ number 1

Share your requirements

FAQ number 2

Make secure payment

FAQ number 3

Get homework answers

FAQ - Frequently Asked Questions

Discover quick answers in our FAQ, covering the most common customer questions about our homework help service.

Is your homework service confidential?


Absolutely! Confidentiality is one of the basic guarantees of our service at MyHomeworkHelp.com.

When our customers make their homework orders, they know their information remains 100% confidential.

Even your homework writer will not be provided with your personal details. So, when you hire a professional homework helper on our website, rest assured that your information will remain private and safe.

For a comprehensive understanding of how we protect your privacy, please refer to our Privacy Policy.

Who will help me with my homework?


We work with subject experts from all over the world. We hire them with the help of complex tests in the disciplines of their expertise. We also verify the IDs and academic transcripts of our homework writers to be sure that our experts have a bachelor's or master’s or a PhD degree. This is how we can be sure of the proficiency of our panel of experts who will help you with your homework.

Is it legal to ask for help with homework?


Seeking homework help is perfectly fine and shows your proactive approach to overcoming challenges. But it's important to use our homework service to enhance your understanding, not to replace your own efforts.

Our homework service offers original solutions for personal use, including:

  • Generating ideas or arguments for your research.
  • Deepening your subject comprehension.
  • Direct citation, with proper referencing.

However, it's crucial to avoid plagiarism by not submitting our work as your own. Make sure to check your institution's academic integrity policies before using our services. Our goal is to support your educational journey in a responsible and beneficial way. Refer our honor code for more details.

Is myhomeworkhelp.com legit?


Yes, myhomeworkhelp.com is completely legitimate. We've been successfully connecting students with top experts worldwide since 2012, offering direct, secure communication for a seamless learning experience. With over thousands of students helped and a commitment to innovative, effective education tools, we're dedicated to making learning easier and more accessible for everyone.

You can read our reviews here on Trustpilot and Sitejabber (Independent, verified reviews from buying customers) like you!

Is there a possibility of plagiarism in my completed order?


Unlike our competitors who use cheap and ineffective in -house plagiarism software, MyHomeworkHelp.com uses credible software to check your homework solution originality. We guarantee that your paper will pass TurnItIn checks with a low percentage of similarity. In addition, we also check submitted papers for ai-content using Originality.ai.

You will receive a complemantary plagiarism free report with your completed order.

What makes you one of the best homework help website?


We are not number 1 (yet!). We're an independent, bootstrapped business standing up to Big EdTech for last 12 years. So it means a lot that folks like you are willing to consider our services for your educational needs.

Myhomework Help is recognized as one of the premier websites for homework answers for three key reasons.

  1. Firstly, we pride ourselves on the expertise and qualifications of our tutors/experts, who are selected through a rigorous vetting process to ensure they can provide best academic assistance across a wide range of subjects.
  2. Secondly, our response time to student inquiries is fast (as early as few minutes), reflecting our understanding of the importance of timely support in an academic setting.
  3. Lastly, we keep our pricing very student friendly. Our aim is to provide the best learning experience to students like yourself without burning a hole in your pockets.