What Is The Source Of Electrical Energy – Electrical circuits 6.P.3A.1. Electrical Energy  Electrical energy is the energy resulting from the movement of electrical charges. Because there are electric charges.

Presentation on the topic: “Electrical circuits 6.P.3A.1. Electrical energy  Electrical energy is the energy resulting from the movement of electric charges. Since electric charges are.” — Transcript:

What Is The Source Of Electrical Energy

2 Electrical Energy  Electrical energy is the energy resulting from the movement of electrical charges. Because electrical charges move, it is a form of kinetic energy. The faster electrical charges move, the more electrical energy they carry.

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4 1. Source of Electrical Energy  Examples:  Electrical energy in a battery comes from stored chemical energy  Electrical energy in a solar cell comes from light energy from the Sun  Electrical energy in sockets comes from chemical energy (burning fossil fuels) that powers a generator in a power plant .

5 2. Conductor  A conductor of electrical energy (wire) that connects all parts of electrical circuits.

6 3. Transformer  A transformer converts electrical energy into something else (a light bulb converts electrical energy into radiant energy)

8 Exercise 3.1A: Complete Circuits 1. Build 1 battery, 2 wires, 1 light bulb 2. Find at least 4 different ways to light a light bulb. 3. In your science notebook, draw one complete diagram that made the light bulb light up and one that didn’t.

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9 Activity 3.1A: Complete Circuits  What made the circuit work?  What caused the circuit not to work?  Which circuit will light the light bulb? Why?

10 Electrical circuit An electrical circuit must be a complete, continuous path along which electricity flows.  The purpose of a switch is to control whether a circuit is closed (electricity can flow) or open (electricity cannot flow).

11 An electrical circuit contains…  1. A source of electrical energy that provides the “push” that causes current to move through the circuit.  2. A conductor of electrical energy (wires)  3. A transformer that converts electrical energy into another form such as light and heat.  4. A switch that opens and closes circuits.

13 Open Circuit  If the circuit is not closed, electricity cannot flow; this is called an open circuit.  Since electricity does not flow, the transformer cannot convert electrical energy into another type of energy.

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14 Closed Circuit  A wire (conductor) must connect the power source to the transformer and then connect back to the power source to create a complete or closed circuit.

15 Closed circuit…. continue  A closed circuit allows electricity to flow and a transformer converts the electrical energy into another type of energy.  Example: A light bulb with two wires connected to it, one going to the negative end of the battery and the other to the positive end, and the light bulb lights up.

16 Series Circuit  In a series circuit, there is only one path for electricity to flow.  If any part of the circuit is open, the series circuit will not work.

17 Parallel Circuit  In a parallel circuit, there is more than one path for electricity to flow.  Electricity can flow around a hole in a parallel circuit.

Electrical Circuits 6.p.3a.1. Electrical Energy  Electrical Energy Is Energy That Is Caused By Moving Electric Charges. Since The Electric Charges Are.

18 Conclusion of the entire circuit  In an open circuit, the path is not connected.  In a closed circuit, each wire is connected and has a closed path.  In a parallel circuit there is more than one path.  There is only one path in a series circuit.

21 Think about it…  Think about some of the things that provide or use electricity in your home.  Categorize these items/appliances based on what they do. That is:  Create heat  Make sound  Create light  Make movement/movement

22 1.What energy goes into the light bulb? 2.What is the source of energy? 3.Why does energy come out of a light bulb? 4.Where does it go? Remember… Activity 3.1A – Complete Diagrams.

24 Conversion of Electrical Energy  Electrical energy can be converted into other forms of energy in a circuit. For example:  Light  Sound  Heat  Mechanical movement.

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25 Law of Conservation of Energy Energy cannot be created or destroyed. Energy can transform from one form to another, but the total amount of energy never changes. Revoke

26 Light  Light is electromagnetic radiation that allows us to see things.  The natural source of light is the Sun, and other sources and examples are Fire and Lamp.

27 Light  Electrical energy can be converted into light energy in an electrical circuit if a light bulb is connected to the circuit.

28 Light….. Continue  The conversion in this case may be as follows:  Chemical energy in the battery is converted into electrical energy in the circuit, which is converted into light and thermal energy in the light bulb. Battery (device) Electrical energy Light bulb (device) Light energy Thermal energy

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29 Heat  Electrical energy can be converted into thermal energy in an electrical circuit if a toaster, stove, or heater is connected to the circuit.

30 Heat……continue Fuel (Chemical Energy) Thermal Energy Generator (Mechanical Energy) Circuit (Electrical Energy) Heater (Thermal Energy)

31 Heat…….Continue  The conversion in this case may be as follows:-  The chemical energy of the fuel in the power plant is converted into thermal energy  This thermal energy is converted into mechanical energy to rotate the generator  The generator converts the mechanical energy energy into electrical energy  Then electrical energy energy in the circuit is converted into thermal energy in the heater

34 Activity 3.1B: Transformations in Electric Circuits 1. Construct a circuit that includes: 1 battery (in a battery holder) 2 wires 1 switch 1 motor Make sure the motor will turn on and off when the switch is opened and closed. 2. Draw a diagram in your notebook. 3. Observe and record the energy transformation in a diagram. Remember to use all your senses to observe.

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36 Mechanical Motion  Electrical energy can be converted into mechanical motion energy by adding a fan or motor to the circuit.  The conversion in this case may be that the chemical energy in the battery is converted into electrical energy in the circuit, which is converted into mechanical energy by the fan or motor.

37 1. What is the purpose of the switch in the circuit? Does it convert energy? 2. What energy ends up being the majority of the energy in the circuit? Electrical circuits – Activity 3.1

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Solved Design (10) Draw A Circuit Diagram Showing The

Where does the energy needed to move electrons through an external circuit and turn on devices (for example, a light bulb) come from? Does zinc oxidation release this energy? And does reducing copper lead to more energy being released? (since we calculate the cell potential by adding the oxidation and reduction potentials of two half-cells). I have always been interested in this question and would really appreciate a clear and concise explanation on this particular topic.

Based on your comment above to the newbie’s answer, you don’t seem to understand how reactions work in general.

Oxidation requires energy at the beginning, of course, but at the end of the reaction the system as a whole is in a lower energy state. This makes the reaction “spontaneous”.

Happening inside the cell. In other words, metal atoms of one half-cell are capable of inducing the reduction of metal cations of another half-cell; Conversely, metal cations of one half-cell are capable of oxidizing metal atoms of another half-cell. When metal B has a greater electronegativity than metal A, then metal B tends to take electrons from metal A (that is, metal B tends to oxidize metal A), thereby favoring one direction of the corresponding reaction.

Practical Electricity In Medicine And Surgery. 211.—storage Battery For Galvaxo Cacteey. Dynamo Machines.—several European Surgeons Have Useda Small Gramme Machine As The Source Of The Energy Requiredto Heat Cautery Electrodes. Where Steam,

By clicking “Accept All Cookies”, you agree that Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. “Non-renewable” energy sources (such as oil and petroleum products, natural gas, liquefied natural gas, coal and nuclear energy), as well as “renewable” energy sources and “alternative fuels” (such as hydropower, solar energy, wind energy, geothermal energy, biomass and biofuels) help meet the country’s energy needs. Fossil fuels and nuclear energy are considered non-renewable energy sources. Coal and natural gas play an important role in power generation as well as industrial processes such as steel production. Hydropower, solar power, wind, biomass, biofuels and geothermal energy are considered “renewable” forms of energy and include varying levels of supply in this country. They are classified as renewable energy sources because their source is considered practically

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