Electricity and electromagnetism: Webquest BBC Electricity and Magnetism http://www.bbc.co.uk/schools/ks3bitesize/science/energy_electricity_forces/magnets_electric_effects/activity.shtml Questions: 1. Why is an iron core needed in an electromagnet? 2. How are electromagnets different to either temporary or permanent magnets? 3. What happens when you add more coils to the wire in an electromagnet? What else can you do to increase the magnetic field of an electromagnet? Electromagnet Simulation
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150 years ago‚ approximately around 1886‚ electricity was becoming a very exciting thing as AC plants started to appear all over the world. This meant great change for not only our establishments but also‚ for families that were near it and could afford it. It was the dawn of aluminum‚ cars and now a better way of life with electricity‚ life was about to get more exciting as well as easier for many families. Around the time of the late 1800’s‚ under the idea of “separate spheres”‚ caring for children
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Hazards of Static Electricity; Lightning Lightning is a massive electrostatic discharge between the electrically charged regions within clouds or between a cloud and the surface of a planet. It is the sudden high-current discharge caused by the atmosphere’s electrical breakdown. Lightning is also one of the most deadly natural phenomena known to man. Lightning is an electric current; thus within a thundercloud up in the sky‚ many small bits of ice (frozen raindrops) collide into each other as
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The overuse of electricity affects the ecosystem in several ways. The overuse of electricity can lead to an increased carbon footprint‚ increased climate change‚ reduction in supply‚ and high energy costs. The abiotic factors that contribute are electricity‚ smoke‚ temperature‚ climate‚ and mining. The biotic factor that affects it is people. Leaving your laptop plugged in all the time will use up 300 kilowatts an hour each year. A natural consequence of overusing energy is increased costs for you
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Electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives a wide variety of well- know effects such as lightning‚ static electricity‚ electro magnetic induction and the flow of electrical current. In addition‚ electricity permits the creation and reception of electromagnetic radiation such as radio waves. Electrical phenomena have been studied since antiquity‚ though advances in the science were not made until the seventeenth and eighteenth
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Atomic Structure & Electricity 1. Draw an atom with an atomic number of 12. Label the protons‚ neutrons‚ and electrons. Use the periodic table to identify which atom you have drawn. 2. How many valence electrons are present in this atom? 2 3. Would this atom prefer to gain or lose electrons? Why? Lose‚ because the octet rule dictates that if there is less than 4 valance electrons‚ they would prefer to leave the atom. 4. Describe the differences between conductors‚ semiconductors
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WEST BENGAL STATE ELECTRICITY DISTRIBUTION COMPANY LIMITED Technical Specifications for A.C. Single Phase ‚ 2Wire Solid State ( Static) Fully Electronic Energy Meter Accuracy Class: 1.0 ‚ Current Rating (5-30) A‚ With Backlit LCD Display for 240 V System Fitted inside Pilfer Proof Meter Box 1.0 SCOPE a) This specification covers design‚ engineering‚ manufacture‚ testing‚ inspection and supply of A.C. Single phase‚ two wire solid state (static) fully electronic energy meters of accuracy class 1
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CHAPTER 1 INTRODUCTION 1.1 Introduction ZESA (Zimbabwe Electricity Supply Authority) SMS Billing System is a web based system which is designed to address the critical requirements of the billing system through the use of a message using a cell phone. It provides enquiries about the customer‚ the customer ’s location‚ cellphone number‚ meter reading date‚ billing date‚ due date and the balance to be paid. This system is going to help easy access to the customer’s account details. It can also
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Current electricity: 1) Give an equation to calculate resistance. 2) Give the meaning and the unit of each symbol. 3) Complete the following table Resistance (Ω) | Current strength (A) | Potential difference (v) | | 12 | 38 | | 0.4 | 32 | 75 | 96 | | 36 | 15 | | 75 | | 0.25 | 135 | | 27 | 4) An electric frying pan is connected to a 220V power point. If the current in the element is 12 A‚ calculate the resistance of the element 5) What will the current
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INSTRUCTIONS All working must be CLEARLY shown Use sketches where necessary to support your answers Silent electronic calculators may be used Students MUST answer ALL questions in Section A and any THREE in section B All questions should be answered using standard english DO NOT TURN THIS PAGE UNTIL YO ARE TOLD TO DO SO Section A: Short answer questions. Answer ALL TEN questions. 1. Draw a labeled diagram of an atom 2.
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