ELECTROMAGNETIC INDUCTION Electromagnetic induction is the production of an electromotive force across a conductor when it is exposed to a varying magnetic field. It is described mathematically by Faraday’s law of induction‚ named after Michael Faraday who is generally credited with the discovery of induction in 1831. Electromagnetic induction was discovered independently by Michael Faraday and Joseph Henry in 1831; however‚ Faraday was the first to publish the results of his experiments.[4][5] In
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Question 1.1: What is the force between two small charged spheres having charges of 2 × 10−7 C and 3 × 10−7 C placed 30 cm apart in air? Answer Repulsive force of magnitude 6 × 10−3 N Charge on the first sphere‚ q1 = 2 × 10−7 C Charge on the second sphere‚ q2 = 3 × 10−7 C econd Distance between the spheres‚ r = 30 cm = 0.3 m Electrostatic force between the spheres is given by the relation‚ Where‚ ∈0 = Permittivity of free space Hence‚ force between the two small charged spheres is 6 × 10−3 N.
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SISTEMAS DC Motors Catedrático: Ing. Gustavo Mendoza Leal Alumno: Alfredo Valdés Cárdenas Introduction A DC motor is a type of electrical machine that converts direct current into mechanical power by means of a magnetic field. DC motors are widely used in field applications because of their many advantages over AC motors such as speed control‚ high starting torque‚ quick starting‚ stopping‚ reverse and acceleration and free from harmonics found in AC. Applications of DC motors include but
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in the band‚ also known as field commander. I understand that this requires maximum dedication and hard work throughout the year. It is my responsibility to put that into action and consideration for my fellow band members and staff. Putting everybody first will be my intention in all occasions. I currently play the clarinet all year around as a sophomore. I have been focused on this for five years now‚ and I know that I will promote and sustain that in being a field commander as well. I try to
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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 kΩ. The
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Zoo Virtual Field Trip Katherine A. Cottrell Liberty University EDUC 500 Zoo Virtual Field Trip In today’s technology age‚ virtual field trips can provide cognitive and affective gains similar to those of a real-life study trip. Field trips taken online can transport students to locations too far away to travel and are cost effective for the school district and parents as well. Teachers can guide and interact with all students in the class for the duration of the virtual field trip‚ which
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experiment. In this lab we are to experiment with the lines of force and equipotentials. We are also to find out vector field and the relationship between the lines of force and the electric field in this lab. Apparatus: Slightly-conducting paper‚ conducting-ink pen‚ digital multimeter‚ banana cables‚ alligator clips‚ power supply (from buss network)‚ cork board‚ probe‚ pushpins. I. Field Inside Capacitors: Find the equipotential lines in the region between the electrodes in 1.Parallel-plate capacitors-
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INTRODUCTION If an electric current flows through a conductor in a magnetic field‚ the magnetic field exerts a transverse force on the moving charge carrier which tends to push them to one side of the conductor. A buildup of charge at the sides of the conductors will balance this magnetic influence‚ producing a measurable voltage between the two sides of the conductor. This presence of measurable transverse voltage is the Hall Effect. The Hall effect was discovered in 1879 by Edwin Herbert Hall
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book “Optics” by Hecht sections 3.2 and 3.3 Speed of light: EM waves travel in a vacuum with speed c = c = 299‚792‚458 ms-1 exactly They are transverse waves with (vector) E and B field orthogonal to each other‚ for this section bold indicates vector quanties. When far from the source (many wavelengths) the E and B fields are in phase The vector E x B points in the direction of motion Travelling waves can be written as E = E 0 ⋅ ei ( kx −ωt ) and B = B 0 ⋅ ei ( kx −ωt ) 1 µ 0ε 0 Magnitude of B and
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3.3.3 In Class or Homework Exercise 1. The rectangular loop below is being pulled to the right‚ out of the magnetic field which points inward as shown. In what direction is the induced current? No current is induced in the top or bottom wire‚ since they are moving parallel to themselves. The only current induced is in the left wire‚ where the current is induced upward. The result will be a clockwise current. 2. If the solenoid below is being pulled away from the loop shown‚ in what direction
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