Today, I am sharing a list of basic electrical laws and theorems. Listing out these laws and theorems will be helpful for the electrical students. All these different laws and theorems belong to electrical, electronic and mechanical studies.

Before this article, I have explained the Basic Concept Electrical Circuit. They are used to solve the electrical network.

To solve these electrical circuits, you also need to apply multiple Electrical Laws and Theorems so that you can calculate the required values for various parameters.

Some laws are applicable to the AC system and the DC system.

Let’s see the most important electrical Laws, theorems and rules, one-by-one.

### Electrical Laws

Here are the most important top 9 electrical rules.

**1.Ohm’s Law**

Here is a simple calculator to calculate Current from Resistance and Voltage using Ohm’s law.

**2.Electric and Magnetic Circuits Kirchhoff Law**

There are two types of Kirchhoff’s Law.

- Kirchhoff Current Law
- Kirchhoff Voltage Law

Learn more detail about Kirchhoff’s law. I have explained with applications.

**3. Joule’s Law of Electrical Heating Effect**

- First Law of Joule
- Second Law of Joule

**4. Newton Law of Motions (Physics laws)**

- First Law of Newton
- Second Law of Newton
- Third Law of Newton

**Note:** These are Physics laws and also useful in Electrical.

**5. Electrostatic Law**

- First Law of Electrostatic
- Second Law or Coloumb Law of Electrostatic

**6. Faraday’s Law Of Electromagnetic Induction**

- First Law of Faraday
- Second Law Faraday
- Third Law or Lenz’s Law of Faraday

**7. Biot Savart Law for Electric and Magnetic field**

**8. Ampere’s Circuital Law**

**9. Gauss’s Law**

**10. Lenz’s Law**

These are the list of electrical laws you must know.

### Electrical and Electronic Theorems

In the electrical and electronic circuit, theorems help to simplify and to analyze the network.

Mostly these theorems are useful for the DC sources.

Here is the list of 9 theorems.

**Superposition Theorem****Thevenin Theorem****Norton Theorem****Millman’s Theorem****Reciprocity Theorem****Compensation Theorem****Maximum power transfer Theorem****Star-Delta transformation Theorem****Delta-Star transformation Theorem**

**Electrical Machines Rule**

The most important rule in electrical machines study is Fleming’s rule. Mainly, this rule is used for motors and generators.

Following are the two Fleming’s rule for Machine:

**Fleming’s Right-Hand Rule****Fleming’s Left-Hand Rule**

The first right-hand rule is applicable to the generators. And the second left-hand rule is applicable to the motors.

This article is all about listing different basic electrical laws and theorems. I will explain each law and theorem in my upcoming articles.

Thanks for reading!

Myself Dipali Chaudhari. I am a master in Electrical Power System. Sharing my knowledge on this blog makes me happy. Apart from that, I love playing badminton. And sometimes I dwell on the Python programming.

Hi Dipali Ji,

Please, can you explain in more details about below theorems?

Star-Delta transformation Theorem

Delta-Star transformation Theorem

Thanks.

Hello, Muqtar

Firstly thanks a lot for suggesting to me.

Sure, I will explain these theorems with the details in my upcoming article.

wonderful thanks alot..

You’re most welcome, Mohamed!

Really helpful for me.

Thank you, Thangam.

Hello Dipali,

Please share an article about on dimension formulas of related to Electrical Engineering.

Hie Rajnish,

Kindly, what point do you want me clear? Please, elaborate.

Thank you for sharing your knowledge. If you share the explanation of each theorems, it would be grateful.

Hi Kris,

Thanks for suggesting. Soon, I will explain each electrical theorem one by one.

Hello

Why didn’t you add Lenz’s law?

Thanks, Ramu for sharing this law. I added this law.