Electric Circuits.

Slides:

Advertisements

Similar presentations

Kirchhoff’s Laws Three Examples

Advertisements

Physics 1161: Lecture 10 Kirchhoff’s Laws. Kirchhoff’s Rules Kirchhoff’s Junction Rule: – Current going in equals current coming out. Kirchhoff’s Loop.

Unit 3, Day 7-8 Kirchhoff’s Junction Rules Calculation of Circuit Currents using Kirchhoff’s Rules Circuit Analysis Approach.

Chapter 18 Direct Current Circuits. Sources of emf The source that maintains the current in a closed circuit is called a source of emf Any devices that.

Fundamentals of Circuits: Direct Current (DC)

Direct Current Circuits

DC Circuits Series and parallel rules for resistors Kirchhoff’s circuit rules.

20.10 Kirchhoff's Rules There are two KIRCHHOFF'S RULES. 1. Junction rule 2. Loop rule These are useful in circuit analysis.

T-Norah Ali Al-moneef King Saud University

Dr. Jie ZouPHY Chapter 28 Direct Current Circuits (Cont.)

© 2015 Pearson Education, Inc.

Chapter 26 DC Circuits. I Junction rule: The sum of currents entering a junction equals the sum of the currents leaving it Kirchhoff’s Rules.

Lecture 2 Basic Circuit Laws

Week 04, Day 2 W10D2 DC Circuits Today’s Reading Assignment W10D2 DC Circuits & Kirchhoff’s Loop Rules Course Notes: Sections Class 09 1.

Series and Parallel Circuits Lesson 6. The two simplest ways to connect conductors and load are series and parallel circuits. 1. Series circuit - A circuit.

Chapter 28A - Direct Current Circuits

Y12 Review… Simple circuit…

In conclusion, there are two requirements which must be met in order to establish an electric circuit. The requirements are: 1.There must.

FCI. Direct Current Circuits: 3-1 EMF 3-2 Resistance in series and parallel. 3-3 Rc circuit 3-4 Electrical instruments FCI.

Circuits Chapter 23.

Chapter 18 Direct Current Circuits. Chapter 18 Objectives Compare emf v potential difference Construct circuit diagrams Open v Closed circuits Potential.

Introduction to Electrical Circuits Unit 17. Sources of emf  The source that maintains the current in a closed circuit is called a source of emf Any.

Chapter 28 Direct Current Circuits. Direct Current When the current in a circuit has a constant direction, the current is called direct current Most of.

Kirchhoff’s Rules.

EEE ( ) - ACTIVE LEARNING ASSIGNMENT Presented by: Divyang Vadhvana( ) Branch: Information Technology.

Kirchhoff’s Rules Important points to consider:  Assume and draw a direction for each current.  Assign and draw signs for each resistor’s  V. The current.

 Solving a circuit consists of finding unknown currents, the current direction, and the voltages in a circuit.  A multiloop circuit has more than one.

“Kirchhoff's Rules” Abdulrajab Layagin. Who is Gustav Kirchhoff?  A German physicist who contributed to the fundamental understanding of electrical circuits.

19-2 EMF and Terminal Voltage A battery or generator, or other electrical energy creation device, is called the seat or source of electromotive force,

Kirchhoff’s Rules Phys 104.

Chapter 31 Fundamentals of Circuits (Circuit Elements and Diagrams & Kirchoff’s Laws and the Basic Circuit)

Chapter 27 Lecture 23: Circuits: I. Direct Current When the current in a circuit has a constant direction, the current is called direct current Most of.

Lectures 7 to 10 The Electric Current and the resistance Electric current and Ohm’s law The Electromotive Force and Internal Resistance Electrical energy.

Internal Resistance Review Kirchhoff’s Rules DC Electricity.

© 2015 Pearson Education, Inc.

Kirchhoff’s Laws.

RESISTORS IN SERIES - In a series circuit, the current is the same

Kirchhoff’s Rules.

Ohms Law, current electricity, series circuits

Direct Current Circuits

Kirchhoff's Rules There are two KIRCHHOFF'S RULES. 1. Junction rule 2. Loop rule These are useful in circuit analysis.

Physics 4 – Jan 26, 2017 P3 Challenge –

Direct Current Circuits

Fundamentals of Circuits

Direct Current Circuits

A B C Which of the circuits shown above are wired in parallel?

Chapter 26:DC Circuits Chapter 26 Opener. These MP3 players contain circuits that are dc, at least in part. (The audio signal is ac.) The circuit diagram.

Physics Circuits: Series

Kirchhoff’s Rules.

Direct Current Circuits

Kirchhoff’s Laws Physics 102: Lecture 06

Devil physics The baddest class on campus IB Physics

Resistors & Capacitors in Series and Parallel

Kirchhoff’s Laws Physics 102: Lecture 06

Lecture 2 - Circuit Elements and Essential Laws

EMF and Terminal Voltage

DC circuits Physics /3/2018 Lecture X.

G10 Review… Simple circuit…

Series and Parallel Circuits

Kirchhoff's Rules.

Physics 1161: Lecture 10 Kirchhoff’s Laws

Lecture 2 - Circuit Elements and Essential Laws

Kirchhoff’s Laws.

Kirchhoff’s Rules Some circuits cannot be broken down into series and parallel connections. For these circuits we use Kirchhoff’s rules. Junction rule:

Kirchhoff’s Laws.

Kirchhoff – Step by step

Physics 4 – Feb 8, 2018 P3 Challenge –

Electrical Circuit Symbols

Kirchhoff's Rules There are two KIRCHHOFF'S RULES. 1. Junction rule 2. Loop rule These are useful in circuit analysis.

Presentation transcript:

Electric Circuits

Analyzing Circuits Practical circuits consist of many elements—resistors, batteries, capacitors— connected together.

Electricity in the Body Your nervous system works by transmitting electrical signals along axons, the long nerve fibers shown here.

Circuit Elements and Diagrams Here are the basic symbols used for electric circuit drawings:

Kirchhoff’s Laws Kirchhoff’s junction law, as we learned before, states that the total current into a junction must equal the total current leaving the junction. For any circuit, if we add all of the potential differences around the loop formed by the circuit, the sum must be zero. This is called Kirchhoff’s loop law.

Kirchhoff’s Laws The most basic electric circuit is a single resistor connected to the two terminals of a battery. There are no junctions, so the current is the same in all parts of the circuit.

Kirchhoff’s Laws The first three steps of the analysis of the basic circuit using Kirchhoff’s Laws:

Kirchhoff’s Laws The fourth step in analyzing a circuit is to apply Kirchhoff’s loop law: First we must find the values for ΔVbat and ΔVR.

Kirchhoff’s Laws The potential increases as we travel through the battery on our clockwise journey around the loop. We enter the negative terminal and exit the positive terminal after having gained potential ℇ. Thus ΔVbat = + ℇ.

Kirchhoff’s Laws The magnitude of the potential difference across the resistor is ΔV = IR, but Ohm’s law does not tell us whether this should be positive or negative. The potential of a resistor decreases in the direction of the current, which is indicated with + and  signs in the figure. Thus, ΔVR = IR.

Kirchhoff’s Laws With the values of ΔVbat and ΔVR, we can use Kirchhoff’s loop law: We can solve for the current in the circuit:

Question 1 The diagram below shows a segment of a circuit. What is the current in the 200 Ω resistor? 0.5 A 1.0 A 1.5 A 2.0 A There is not enough information to decide. Answer: B

Question 1 The diagram below shows a segment of a circuit. What is the current in the 200 Ω resistor? 0.5 A 1.0 A 1.5 A 2.0 A There is not enough information to decide.