Electric Current How is water like electricity?. What is current? Water tends to flow from high places to low places, due to it’s potential energy or.

Slides:

Advertisements

Similar presentations

Ch Electricity II. Electric Current (p ) Circuit Potential Difference Current Resistance Ohms Law.

Advertisements

Physical Science 7.2 Electric Current.

Electric Current Section 2.

Electricity Foundations of Physics. Electricity The movement of charge from one place to another Requires energy to move the charge Also requires conductors.

CURRENTS AND OHM’S LAW. What?  Electricity – flow of electric current  Electric current – the movement of an electrical charge.  In most cases, we.

Electricity. whether two charges attract or repel depends on whether they have the same or opposite sign unit of measurement for charge is the coulomb.

Table of Contents Electricity.

Electrical Energy - Moving electrons in a path is electricity

energypushingDef : the energy or pushing force available to move electrons through a circuit Unit: volt (V) Symbol: V Measured using an instrument called.

CHAPTER 7 ELECTRICITY BINGO. A circuit in which current has more than one path is called a _________________ circuit.

Electricity A. Electric Charge 1. Static electricity is the accumulation of excess electric charges on an object. a. More e¯ = negative charge b. More.

Measurements in Electric Circuits Gr. 9 Electricity Unit.

ELECTRICITY Static Electricity Static electricity is when a charge is built up on an object. The charges do not move. This is usually caused by friction.

 Electricity is caused by the flow (or net movement) of Electrons  Electric Current – the rate that positive charges flow in a circuit › Actually a.

CURRENT ELECTRICITY Characteristics of Current Electricity.

Electricity. Conductors and Insulators Conductors are materials that allow electricity to flow easily Examples: metal, water, air and some chemicals Insulators.

Ohm’s Law Conductor A conductor is a material that current can pass through easily, like metals.

ELECTRICITY Static Electricity Static electricity is when a charge is built up on an object. The charges do not move. This is usually caused by friction.

Electricity 7.2 Electric Current.

Electricity: The Mouse and Cheese Analogy

Electricity. Electric Current The net movement of electric charges in a single direction Electrons in a material (metal wire) are in constant motion in.

Electric Current. Electric Potential Electrons in a circuit have potential energy –The energy is related to the force exerted by an electric field –The.

Review of Fourth Grade STARTING WITH ELECTRICITY.

Electric Current & Electric Circuits. The movement of electrically charged particles is an electric current. The SI unit for electric current is ampere.

Electricity Basics of electricity. Electricity Atoms – The smallest unit of each element Electrons – negatively charged particles in atoms Ions – charged.

Circuits : Series vs Parallel

Ch Electricity II. Electric Current  Cell and Battery  Potential Difference  Current  Resistance  Ohm’s Law.

 Electric Current- net movement of electric charges in a single direction ◦ Example- powering electronics.

1 Chapter 20 Review activity! Fun in B208!.  A. Unit of energy  B. Unit of charge  C. Unit of current  D. Unit of voltage. 2 What is a coulomb?

Conductors and insulators.

Electric Current. Ohm’s Law

Electricity. whether two charges attract or repel depends on whether they have the same or opposite sign unit of measurement for charge is the coulomb.

Ch Electricity II. Electric Current  Cell and Battery  Potential Difference  Current  Resistance  Ohm’s Law.

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

Chapter 7-2 Electric Current. Electric Pressure (Voltage) Charges flow from high-voltage areas to low-voltage areas Think about it like water: water flows.

1 Current, Voltage & Resistance Conductors & Insulators.

a path along which electrons flow must have no breaks in the path to work 2 types: –closed (no breaks) –open (break, causes the device to shut off - switch)

PHYSICAL SCIENCE Electricity Part 2: Current Current Objectives Describe how batteries are sources of voltage. Explain how a potential difference.

Electrical Fundamentals chapter 23. Electrical Fundamentals FIGURE 23.1 In an atom (left), electrons orbit protons in the nucleus just as planets orbit.

Electric Current. Electric Current (I) The net movement of electric charges in a single direction ▫Unit - amperes  Symbol – A  Measurement instrument.

7.2 Electric Current Current is the net movement of electric charges. – These can be electrons as in wires. – These can be ions as in electrolytes. In.

16.2 Current I CAN: -RECALL THAT CURRENT IS MEASURED IN AMPERES (A), WHICH IS EQUAL TO ONE COULOMB OF CHARGE PER SECOND (C/S). -RECALL THAT POTENTIAL DIFFERENCE.

Electrical Charge We can talk positive and negative electrical charges. Can we transfer charges from one object to another? –Yes Can you think of an example?

Electric Current. What is electrical current? When electrical charges move, they are known as electric current Electrical current is the flow of electrons.

Electric Current Electric current – The net movement of electric charges in a single direction through a wire or conductor. Voltage difference – The force.

Chapter 7 Section 2.

Lecture 52 – Lecture 53 Electric Current Ozgur Unal

Physical Science 7.2 Electric Current.

Electricity 7-2 Electric Current.

Electricity - Current.

Ch Electricity II. Electric Current (p ) Circuit

Notes 6 - Electricity.

Ch Electricity II. Electric Current Circuit Potential Difference

Bellwork What is required for electric current to flow?

Current Electric Current: (I) the net movement of electric charge in a single direction. Measured in Amperes (Amps) How do the e- move? They travel like.

Chapter 7 section 2 Electric Current

Electricity Electric Current.

STARTING WITH ELECTRICITY

Electric Current 6.2.

Electric Current and Electrical Energy

Electric Current.

Electrical Current &Circuits

Ch Electricity II. Electric Current (p ) Circuit

Resistance in Circuits

Electricity II. Electric Current Circuit Potential Difference Current

Voltage Difference The difference in electrical potential between two places. Unit of measure = V (volts) Voltage causes current to flow through an electric.

Electric Current Chapter 34.

Electric Current 13.2.

Presentation transcript:

Electric Current How is water like electricity?

What is current? Water tends to flow from high places to low places, due to it’s potential energy or the effect of gravity. Electricity acts in the same manner. Electrons will flow from a place with a negative charge to a place with positive charges (Opposites attract)

What is current? Electric Current (I) is the net movement of electrons in a single direction. Electric current is measured in amperes or amps (A) 1 ampere = 6250 million billion electrons or 6.24 X (coulomb) flowing past a point every second [1 A = 1 C/S]

What creates the current? With water, a difference in height would make the water move. With electric current, you need a power source to provide a voltage difference.

What is a voltage difference? The voltage difference (V) is the difference in the voltage or the electric potential energy. Think of it like an electric pressure. With a battery, electrons are on one end, the negative end. They want to travel to the positive end of the battery. Voltage is measured in volts (V) [ 1 volt = 1 joule/coulomb ]

What makes the light bulb glow? Like water current, electric current can be slowed down by bumping into things The part of the circuit which is inside of the light bulb is a thin wire called a filament. This filament resists the flow of electrons; The electrons bump into the molecules in the material and electrical energy is converted into thermal and then radiant energy (glow). The filament has a high resistance.

What is resistance? Resistance (R)- the tendency for a material to oppose the flow of electrons. Conductors have less resistance than insulators. (Copper is an excellent conductor, it has a low resistance) Resistance is measured in Ohms (Ω)

Quiz What keeps the current flowing in a circuit? The voltage difference of the battery What makes a light bulb glow? The resistance of the filaments in the bulb How is water like electricity? It has a current (I), requires a difference in energy to keep moving (V) and can be slowed down by objects in its path (R).

Water Analogy Animation Wl9nQ