Measuring Voltage, Current and Resistance Lab Summary Voltage (symbol = V)  the force which pushes electrons through a circuit resulting in electrical.

Slides:

Advertisements

Similar presentations

Current Electricity & Ohm's Law.

Advertisements

What is Electricity? Electricity is the flow of moving electrons. When the electrons flow it is called an electrical current.

Basic Electrical Systems Theory and Repair

Amps, Volts and Ohms Units of Electrical Measurement.

Chapter 8 Ohm’s law describes the relationship of current, voltage and resistance Pages

Current Electricity.

ELECTRIC CURRENT Electricity, like water, can only flow if charged particles have potential.

Unit 3 Day 1: Voltage, Current, Resistance & Ohm’s Law Batteries Electric Current Conventional Current Resistance Resistors Energy Dissipated in a Resistor.

Electricity and Electrical Circuits. Chapter Sections O 1 - Electrical Circuits O 2 - Current and Voltage O 3 - Resistance and Ohm’s Law.

SPH3U/SPH4C Findlay ELECTRIC CIRCUITS Students will: Solve problems involving current, charge and time. Solve problems relating potential difference to.

Chapter 8 Ohm’s law describes the relationship of

Do Now What work is required to move 7 coulombs of charge through a potential difference of 3 volts?

Current Electricity. Electricity Electricity is the flow of electrons through a conducting material. Electricity is the flow of electrons through a conducting.

Electric Current Electrical current is the flow of electrons. Unlike static electricity, charges are in motion. Two types of Current I. Direct current.

Measurements in Electric Circuits Gr. 9 Electricity Unit.

Electrical Current Mr. Fleming.

Electricity Currents, Circuits Electricity that moves… Current: The flow of electrons from one place to another. Current: The flow of electrons from.

ELECTRIC CIRCUITS. I. Circuits A flow of electrons is called a current.  Symbol - I  Unit is Amperes or Amps (A)  I = q/t  Current is amount of charge.

CURRENT ELECTRICITY Characteristics of Current Electricity.

(1)A source voltage, that is, an electron pump usually a battery or power supply. [ ENERGY IN] (2) A conductor to carry electrons from and to the voltage.

Chapter 7 Electricity. What is Charge? Protons have a (+) charge Electrons have a (-) charge Charge (q) is measured in Coulombs The elementary charge.

Basic EE Theory Charge Current Voltage Resistance Practice Power supply Breadboards Resistor code Multimeters.

ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.

CH-20: Electric Circuits. What we learned so far? Electric Force Electric Field Ch 19: Electric potential difference (or Voltage) V is a scalar. SI unit:

Electrical Resistance Electrical resistance is a measure of how difficult it is for electricity (electrons) to flow through a material. The units of resistance.

Basic EE Theory Charge Current Voltage Resistance Practice Power supply Breadboards Resistor code Multimeters.

2 But what makes the electrons flow? Any electrical circuit requires three things 1.A source 2.A load 3.A means of transmission A definition of a current.

Energy and Electrostatics. A new definition of potential energy An object has potential energy due to its location within a force field. To change the.

Chapter 17 Current and Resistance. Electric Current Whenever electric charges of like signs move, an electric current is said to exist The current is.

Electric Current Chapter 7 section 2.

Electric Current Chapter 7-2. Electric Circuit F A closed path through which electrons can flow F Electrons flow because of a difference in potential.

Understanding Electricity Physical Science Chapters 6,7,8,and 9.

AP Physics Chapter 18 Electric Current Alessandro Volta ( ) invented the electric battery. An electric cell is composed of 1 anode and 1 cathode…a.

Electrical Current and Circuits How Electricity Gets To Where It Is Going.

Electricity and Electronics. Sepperated into TWO groups Electricity – It is the ongoing flow of electrons. Electronica – It is the Science of how we control.

Electricity on the Move. Current Electricity Unlike static electricity, which does not move except when discharged, current electricity is a continuous.

Chapter 16 Electricity.

Electrostatics the study of electrical charges at rest Electrodynamics the study of electrical charges in motion opposite Two opposite types of charge.

Magnetism and Electricity Vocabulary Week 3.  S8P5c Electromagnetism: Investigate and explain that electric currents and magnets can exert force of each.

Ohm’s Law PSSA Requirement Unit 9 Honors Physics.

Electricity and Circuit. Types of Electricity Static Electricity – no motion of free charges Current Electricity – motion of free charges – Direct Current.

Electric Current. Charge in motion (“flow” of charges). Charge in motion (“flow” of charges). Current: The number of electrons that pass a specific point.

Outline 1 Electric Circuits and Electric Current 2 Ohm’s Law and Resistance 3 Series and Parallel Circuits 4 Electric Energy and Power 5 Alternating currents.

The flow of charged particles charged particles ; through a conducting metal.

Chapter-13 Outline 1Electric Circuits and Electric Current, I 2 Ohm’s Law, V = I R; and Resistance, R. 3 Series and Parallel Circuits 4 Electric Energy.

Current Electricity.

Electricity and Circuit

through a conducting metal

Magnetism and Electricity Vocabulary On-Level

Electricity & Magnetism

8.3 Resistance and Ohm’s Law

Characteristics of Current Electricity

Electricity & Magnetism

13 Electric Circuits.

Basic EE Practice Theory Power supply Charge Breadboards Current

Basic EE Practice Theory Power supply Charge Breadboards Current

Magnetism and Electricity Vocabulary On-Level

Electric Current Chapter 6-2.

Measuring Voltage, Current and Resistance Lab Summary

Voltage, Current, Resistance & Ohm’s Law

ELECTRIC CIRCUITS.

Electrical Current & Circuits

Science 9 Electricity Review.

Electricity II. Electric Current Circuit Potential Difference Current

Ohm’s Law & Circuits Chapter 7.2 & 7.3.

ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.

Presentation transcript:

Measuring Voltage, Current and Resistance Lab Summary Voltage (symbol = V)  the force which pushes electrons through a circuit resulting in electrical current flow.  Magnitude expressed in units of Volts (V)  Named after Count Alessandro Volta who invented first voltaic cell  Measured using voltmeter or multimeter (DMM)  Higher voltage means stronger force

Measuring Voltage, Current and Resistance Lab Summary Current (symbol = I)  The amount of electrons flowing past a point in a conductor in a certain amount of time. Current is considered a rate since associated with time.  More electrons flowing means greater current  Magnitude measured in units = amperes (A)  Named after Andre Ampere who discovered that a magnetic field forms around a wire when a current passes through it (theory of electromagnetism)  Measured using an ammeter or multimeter (DMM)  1A=6.24x10 18 e -  2 types of current: 1. Alternating (AC): changes direction/polarity many times per sec 2. Direct (DC): flows in 1 direction only

Measuring Voltage, Current and Resistance Lab Summary Resistance  Opposition to the flow of current  Each component in a circuit creates resistance but some more than others. Resistance results in heat, light or motion given off  Resistors are components designed especially to resist (decrease amount of current going from one component to another) Why?  Magnitude measured in ohms ( Ω )  Named after Georg Simon Ohm who discovered relationship between voltage, current and resistance…. known as Ohm’s Law: R=V I Brown,gold,black,black Orange,orange,orange,gold Green,blue,brown,gold Black,green,yellow,purple Black,green,blue,black Brown,green,red,green

Activities  OLL#10: Complete Problems 1-2,5-6,9-10 at the link below: online.com/objects/index_tj.asp?objID=dce11904 Note: Use GFS and write out your solution on a piece of paper first. Then check your answer on the site

Activities cont.  Activity: a)Find the resistance of each of the 6 resistors on the previous slide. Use the colour chart to find your answers. b) Find the resistance of each of the 4 different resistors in the container at your table