Energy comes in many forms. Electric energy can be converted into useful work‚ or mechanical energy‚ by machines called electric motors. Electric motors work due to electromagnetic interactions: the interaction ofcurrent (the flow of electrons) and a magnetic field. Problem Find out how to make a simple electric motor. Materials Needed D battery Insulated 22G wire 2 large-eyed‚ long‚ metal sewing needles (the eyes must be large enough to fit the wire through) Modeling clay Electrical tape Hobby
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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 http://www.fossweb.com/modules3-6/MagnetismandElectricity/activities/electromagnet
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prime movers‚ so improvements to both compressor technology and prime mover technology are major goals for HVAC research and development. Frictionless chillers‚ the newest generation of chiller technology‚ achieve both goals. Designed with oil-free magnetic bearing technology and highspeed impellers‚ McQuay® frictionless chillers can operate as low as 0.375 kW/ton IPLV‚ the most efficient performance in its tonnage range in the industry. Full load performance as low as 0.62 kW/ton IPLV is about 32 percent
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EXTENDED ESSAY: CHEMISTRY What effect does magnetic field have on the formation of Liesegang rings (crystal growth in gel medium) on elements of ferromagnetic‚ diamagnetic and paramagnetic nature like Cobalt‚ Nickel‚ Copper and Manganese in their chloride compounds when performed in an agar medium? Lokesh Chandnani Candidate Number – 049369 – 0003 Supervisor: Mr. Jaydip Chaudhuri The Aga Khan Academy‚ Hyderabad Session: May 2015 Word Count: 3798 1. Abstract Liesegang rings phenomena is a
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electric and magnetic fields. Electromagnetism is defined the interaction between a magnetic field and an electric field. People use electromagnetic to transmit electricity to other place‚ to supply electricity form magnetic fields and to store and conserve energy. Electromagnet has components of strong interaction‚ weak interaction and gravitational. According to Hans Christian Ørsted that electricity and magnetism are linked. He proved that an electric current produces a magnetic field as it flows
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unlike charges attract‚ like ones repel. 2. Magnetic poles (or states of polarization at individual points) attract or repel one another in a similar way and always come in pairs: every north pole is yoked to a south pole. 3. An electric current in a wire creates a circular magnetic field around the wire‚ its direction depending on that of the current. 4. A current is induced in a loop of wire when it is moved towards or away from a magnetic field‚ or a magnet is moved towards or away from
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Product Fabrication SemiTech Mr. Mark Benjamin Engineer SemiTech Dear Mr. Mark Benjamin This is the report for analyzing and recommends dope silicon for our company. In the report‚ I use the right-hand rule to determine the direction of the magnetic field‚ force acting in charge and the direction of moving charges. After that I use several equations to calculate the carrier concentration‚ hall coefficient‚ of the sample. It is an n-type semi-conductor. The resistance of the sample is 1.756
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Induction cooktops heat the pan only. Photo courtesy of Consumer Guide Products KITCHEN APPLIANCES Microwaves Nonstick Cookware PlanetGreen.com: Are you a green appliance guru? Do you crave the simplicity and rapid heating of electric stoves but long for more responsive temperature control? Perhaps your favorite TV chef has won you over to cooking with gas‚ but the thought of tearing up your kitchen to put in a gas line leaves you cold. Maybe you have a gas stove‚ but wish
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APPLICATION NOTE Circulators and Isolators‚ unique passive devices AN98035 Philips Semiconductors Circulators and Isolators‚ unique passive devices Application Note AN98035 0. Contents 1. 2. 3. 4. Introduction Definitions Behaviour of ferrites Principles of operation and construction 4.1 Resonance isolator 4.2 Field displacement circulator 4.3 Phase shift circulator 4.4 Faraday rotation circulator 4.5 Ring circulator 4.6 Junction circulator 4.7 Edge guided mode circulator 4.8 Lumped element
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when we say a substance is magnetic. (HINT: Be sure to mention the role of the Electrons) If a substance is magnetic‚ we are actually saying that it is able to be acted upon by a magnetic field. When electricity flows through a circuit‚ it creates a magnetic field.When a magnet cuts across a circuit‚ a voltage is produced. 2. Discuss the relationship between electric and magnetic fields. (HINT: Be sure to discuss what happens when electric current is applied to a magnetic field.) The relationship
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