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- Voltage is a measure of the difference in electric potential and provides the force for current to flow. Batteries use chemical reactions to produce electricity between two electrodes.
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- Key concepts include voltage, current, resistance, circuits, and Ohm's Law. Circuits can be connected in series or parallel.
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Electricity affects our lives in many ways. It is the flow of electric charges called current. Electricity allows devices like lights and appliances to function. Current flows through circuits which must be closed loops with a power source, wires, and a load. Circuits can be connected in series or parallel. Safety devices like fuses and circuit breakers help control electric current and prevent hazards by opening the circuit if current flow becomes too high. Proper use and understanding of electricity helps ensure it benefits our lives safely.Basic Elec 1.pptx
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The document defines basic electrical components and concepts. It explains that electricity can be broken down into electric charge, voltage, current and resistance. It describes the three classifications of materials as conductors, insulators, and semiconductors. It compares and contrasts direct current (DC) and alternating current (AC), and explains the concepts of grounding, Ohm's law, and Watt's law.LECTURE of Current Electricity and .pptx
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Lightning occurs when large amounts of static electricity build up in storm clouds and discharge in a large flash that can be seen across the sky and heard as thunder. An electrical circuit is a path through which electricity can flow, and must be closed to allow current to flow; it is represented by standard symbols. Thomas Edison was one of the greatest inventors in history, with over 1000 inventions including improving the light bulb and helping discover electricity, both of which still impact modern life.Current Electricity & Ohms Law
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Electrical Current is the flow of charged particles. The flow of charges will be constant in current electricity. For the current to flow we need a circuit. The electrons in a current flows from negative to positive. Copy the link given below and paste it in new browser window to get more information on Introduction of Current Electricity www.askiitians.com/iit-jee-electric-current/introduction-of-current-electricity/Electricity lesson
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Electricity is the flow of electrons. Static electricity occurs when there is a buildup of electrons on an object without a discharge path, such as through friction. Current electricity requires a closed circuit or conductive path for electrons to flow from a power source through a load. Circuits can be in series, with one conductive path, or parallel with multiple paths. Conductors allow electron flow while insulators do not. Switches open or close circuits to control electron flow.Electricity
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The document discusses electricity and electrical circuits. It introduces Benjamin Franklin and Thomas Edison, who were important figures in understanding and advancing electricity. It defines electricity as the flow of electrons along a wire, which is called an electric current. The document also defines electrical circuits and their components, including cells/batteries, switches, lamps, and wires. It explains how circuits need to be complete for electricity to flow and power the lamp.Electric current
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The document discusses electricity and electrical circuits. It introduces Benjamin Franklin and Thomas Edison as important figures in the history of electricity. It defines electricity as the flow of electrons along a wire, which is called a current. It explains the components of electrical circuits including cells/batteries, switches, bulbs, wires, voltmeters, ammeters, resistors, motors, and more. It discusses the differences between series and parallel circuits and how current and voltage are measured in circuits.Electricity and magnetism
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- There are two types of electricity: static electricity caused by friction and current electricity produced by moving electrons.
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The document defines basic electrical components and concepts. It explains that electricity can be broken down into electric charge, voltage, current and resistance. It describes the three classifications of materials as conductors, insulators, and semiconductors. It compares and contrasts direct current (DC) and alternating current (AC), and explains the concepts of grounding, Ohm's law, and Watt's law.LECTURE of Current Electricity and .pptx
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Here are the answers to the questions on Electromotive Force:
1. Electromotive Force (EMF) is the driving force that causes electric current to flow in a circuit. It is the voltage generated by the source like a battery or generator.
2. EMF Formula: EMF (竜) = Work done (W) / Charge moved (Q)
3. The SI unit of EMF is Volt (V).
4. Potential Difference is the difference in electric potential between two points in a circuit. EMF is the maximum potential difference that can be developed by the source in an ideal condition with zero resistance in the circuit.
5. Yes, EMF can be negative ifL6.ppt
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- Measurement units for electrical values and common component symbols.
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- There are two types of electric charge: positive and negative. Electrons carry a negative charge while protons carry a positive charge. Materials become positively charged when electrons are removed and negatively charged when electrons are added.
- Coulomb's law describes the electric force between two charged particles. It states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Electricity as level
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Key concepts in electrical engineering are fundamental to its various applications. Voltage, measured in volts (V), represents the electric potential difference that drives current through a circuit. Current, measured in amperes (A), is the flow of electric charge, which can be direct current (DC) or alternating current (AC). Resistance, measured in ohms (立), indicates how much a material opposes the flow of current. Ohms Law connects voltage, current, and resistance, while power, expressed in watts (W), quantifies the rate of energy consumption or production, calculated using the relationship between voltage and current.
Electrical engineering encompasses several specialized branches. Power engineering focuses on the generation, transmission, and distribution of electrical power, ensuring efficient energy delivery and integrating renewable sources. Control systems involve modeling and controlling dynamic systems using feedback mechanisms, which are crucial for automation and robotics in various industries. Electronics is concerned with designing and applying electronic circuits and devices, including both analog and digital components, essential for consumer products and communication systems. Telecommunications focuses on transmitting information over distances, designing systems for mobile networks and satellite communications to enable reliable data transfer. Signal processing involves analyzing and manipulating signals, such as audio and video data, developing algorithms for filtering and enhancing these signals. Microelectronics centers on designing small electronic components like integrated circuits (ICs), which are critical for the development of compact electronic devices.
The applications of electrical engineering are vast and impactful. In the energy sector, engineers design and optimize power generation systems, including renewable energy sources like wind and solar. In consumer electronics, they create devices such as smartphones and home appliances that enhance user experience and energy efficiency. Additionally, electrical engineers contribute to healthcare by designing medical devices and imaging systems Basic Elec 1.pptx
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ohm's law conductor insulator electric circuit ammeter voltmeter
- 1. Smart presentation 1.Electric current 2.Ohms law 3.Properties of electric charge
- 2. Electric charge A charge particle is called an ion is an atom with positive or negative charge. When atom losses electron it become a positively charged When an atom gain electron it become negatively charged. The unit of charge is coulomb, represented by C.
- 3. continue Same charges repel each other. Opposite charges attract each other. The sum of identical positive and negative quantities is zero (0). The total charge of a closed system is constant. The universe is a closed system. It is the law of conversation of charge.
- 4. Electric Current The Rate of flow of electric charge is known as electric current. Represented by I. The unit of current is Ampere. The equation of current is I=q/t Where q is charge in coulombs and t is the time in second.
- 5. continue Current due positive charge is known is conventional current. Current due to negative charge is known as electronic current. It is the property of current when it Is passed from a wire it will produce a magnetic field around that wire from which it is passed.
- 6. Resistor and resistance A resistor is an electrical component which provide opposition to the flow of current. Resistance is a measure of the opposition to current flow in an electrical circuit. The unit of resistance is ohm. Represented by the greek letter omega(立).
- 7. Conductor and Insulator Conductors: is a material that offers low resistance or offers negligible resistance to the flow of current. Examples are Silver copper gold and aluminum. In Conductors electron can move easily.
- 8. continue Insulator: is a material that provide high resistance to the flow of current. Insulator restrict the flow of current. Example of insulator is Rubber paper glass wood and plastic. Insulators are used in electrical equipment to support and separate electrical conductors without allowing current through themselves.
- 9. Electric circuit The path to the flow of current is known as electric current. The diagram for electric circuit is shown below. circuit diagram
- 10. Electric circuit Another diagram for electric circuit is.
- 11. Electric circuit Ammeter: is a device which measure electric current in a circuit. Ammeter is connected in series with an electric circuit. Voltmeter: is a device which measure the voltage in the electric circuit. Voltmeter is connected in parallel.
- 12. Ohms law This law states that: potential difference(voltage) Across and ideal conductor is proportional to the current Ohms law is given by V = I R Temperature should be constant.
- 13. Thanks
- 14. Ohms law The material which obey ohms law is known as ohmic material. Ohms law is not applicable in semiconductor because when temperature is changed in semiconductor their property also changed. Through ohms law we can find voltage current and resistance also.