Working from electromagnetism to circuit theory

In summary, the conversation discusses the possibility of using electromagnetic theory to better understand circuit theory and the correlation between the two. The individual suggests looking at circuits from a general point of view and then reducing them to Kirchoff and other laws. They also mention resources such as the Berkley course on physics, the volume on electromagnetism, and Feynman's lectures. The conversation ends with a mention of how this approach is applied in areas such as antenna theory and wave guides.
  • #1
vr
2
0
Hi,
Are there ways to use/reduce electromagnetic theory to understand circuit theory better? ie use circuit theory as a special case of em theory? if so can you suggest books which do it this way?
basically my idea is to look at any circuit from the general point of view - using the physics of em theory and the equations first ( and then reduce it to Kirchoff and other laws later on and see the correlation).
Thank you.
 
Physics news on Phys.org
  • #2
Things like kirchhoffs rules pretty much apply straight from energy conservation laws.
 
  • #3
Check out the Berkley course on physics,the volume on electromagnetism,as well as the second volume of Feynman's lectures.I think I've seen Maxwell eqn-s------>Ohm & Kirchhoff's laws deduction.

Daniel.
 
  • #4
Thank you for the information.
 
  • #5
If I understand you correctly, you'll find that EEs do this sort of stuff in antenna theory, with wave guides, and so on.
Regards,
Reilly Atkinson
 

Related to Working from electromagnetism to circuit theory

1. What is electromagnetism and how does it relate to circuit theory?

Electromagnetism is a branch of physics that deals with the study of electric and magnetic fields. This field of study is essential in understanding the behavior of electricity and its interaction with magnetism, which is the basis of circuit theory. In circuit theory, we use the principles of electromagnetism to analyze and design electrical circuits.

2. Can you explain the relationship between voltage, current, and resistance in a circuit?

Voltage, current, and resistance are fundamental concepts in circuit theory. Voltage is the potential difference between two points in a circuit and is measured in volts. Current is the flow of electric charge and is measured in amperes. Resistance is the opposition to the flow of current and is measured in ohms. According to Ohm's Law, these three quantities are related by the equation V = IR, where V is voltage, I is current, and R is resistance.

3. How does an electromagnet work in a circuit?

An electromagnet is created by passing an electric current through a wire wrapped around a magnetic core. This causes the wire to generate a magnetic field, which can be strengthened by increasing the number of wire turns or the current flowing through the wire. In a circuit, an electromagnet can be used to control the flow of current or to convert electrical energy into mechanical energy.

4. What are the different types of circuits and how do they differ?

There are three main types of circuits: series, parallel, and series-parallel. In a series circuit, the components are connected in a single loop, and the current remains the same throughout the circuit. In a parallel circuit, the components are connected in multiple branches, and the voltage remains the same across each branch. A series-parallel circuit combines elements of both series and parallel circuits.

5. How does circuit theory help in practical applications?

Circuit theory is crucial in the design and analysis of electronic devices and systems, such as computers, smartphones, and power grids. It allows us to predict the behavior of circuits and troubleshoot any issues that may arise. Circuit theory also helps in the development of new technologies and advancements in the field of electronics.

Similar threads

I Is the Poynting Vector Field the Only Factor in Energy Flow in Circuits?
    • Electromagnetism
Replies
16
Views
1K
I An attempt to understand the associated variable conventions in circuits
    • Electromagnetism
Replies
1
Views
877
I Physics domain analysis of Voltage drop in series resistor
    • Electromagnetism
Replies
7
Views
1K
Can Maxwell's Method Be Used for High Frequency Circuit Calculations?
    • Electromagnetism
Replies
22
Views
2K
I Is this example incorrect in Agawal's book on electric circuits?
    • Electromagnetism
Replies
3
Views
931
A Basic Scheme and Fundamental Equations of String Theory
    • Beyond the Standard Models
Replies
26
Views
885
Discover the Real Gem: Neoclassical Theory of Electromagnetic Interactions
    • Science and Math Textbooks
Replies
6
Views
2K
Electromagnetic Waves and different energy manifestations
    • Electromagnetism
Replies
4
Views
1K
Does Electricity Need a Complete Circuit? Exploring Basic Physics Questions
    • New Member Introductions
Replies
6
Views
207
Good books to learn electronic devices and circuits AND digital electronics
    • Science and Math Textbooks
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top