Fundamentals of PR: CPRL 510-751 Fall 2014 EVALUATION 1 DUE DATE: Monday 22 September 2014 TOTAL: 15 INSTRUCTIONS: Submit hardcopy in class on 22 September 2014. Please number your answers correctly. You will be assessed on language‚ and your insight and interpretation of the work covered. I am looking for your understanding‚ not your ability to copy from a book. Also‚ your ability to substantiate your argument will be assessed‚ i.e. providing sound reasoning for your thoughts
Premium Ethics Public relations Business ethics
Matulac Date : November 09‚ 2013 Yr. & Section: IV- Perseverance Teacher: Mrs. Pacita J. Yapsangco “Magnetic Field of a Coil” Experiment 2.5 I. Objectives: To produce a strong magnetic field just by looping the wire into coils II. Materials: 6 V or 9 V batteries 50 cm of bare 12- gauge copper wire Stiff cardboard and scissors Wooden dowel (about 15 cm long x 4 cm diameter) Iron filings
Premium Magnetic field Electric current
behavior of magnetic fields. The lab was divided into four parts. The first three parts were conducted with a compass that was used to locate the magnetic field lines around a bar magnet‚ a solenoid and then a pair of Helmholtz coils. As a result of these trials‚ our observations found evidence that magnetic field lines go from a north magnetic pole to a south magnetic pole. These results were seen in all three magnetic devices. When determining the magnitude of the electric field in the Helmholtz coils
Premium Magnetic field
(2012) 66–75 Contents lists available at SciVerse ScienceDirect Finite Elements in Analysis and Design journal homepage: www.elsevier.com/locate/finel Improved braking torque generation capacity of an eddy current brake with time varying magnetic fields: A numerical study Kerem Karakoc a‚n‚ Edward J. Park a‚b‚ Afzal Suleman a a b Department of Mechanical Engineering‚ University of Victoria‚ PO Box 3055‚ Victoria‚ BC‚ Canada V8W 2Y2 Mechatronic Systems Engineering‚ School of Engineering Science‚ Simon
Premium Magnetic field
1. Which of the following statements about magnetic fields is not true? | Magnetic Flux is a vector. | | Changing magnetic fields create electric fields. | | Changing electric fields create magnetic fields. | | The magnetic field cannot do work on a moving charge. | | The magnetic force on a moving charge can be zero. | 2. If you double the current through an inductor‚ the energy stored in the associated magnetic field increases by a factor of _____. | Two - wrong |
Premium Magnetic field Electromagnetism Magnetism
energy and develops torque‚ that is‚ a tendency to produce rotation. ❖ In DC generator‚ the armature winding is mechanically rotated through the stationary magnetic fields created by the electromagnets or permanent magnets. ❖ In AC generator‚ the electromagnets or permanent magnets and their accompanying magnetic fields are rotated with respect to the stationary armature windings. Classification of single phase motors 1. Shaded pole 2. Reluctance 3. Split-phase
Premium Electric motor Electrical generator Electricity
interaction is described in terms of a vector field‚ where each point in space (and time) is associated with a vector that determines what force a moving charge would experience at that point (see Lorentz force). Since a vector field is quite difficult to visualize at first‚ in elementary physics one may instead visualize this field with field lines. The magnetic flux through some surface‚ in this simplified picture‚ is proportional to the number of field lines passing through that surface (in some
Premium Magnetic field Magnetic flux
Assignment View] [ Print ] Electric Field Due to Increasing Flux Learning Goal: To work through a straightforward application of Faraday’s law to find the EMF and the electric field surrounding a region of increasing flux Faraday’s law describes how electric fields and electromotive forces are generated from changing magnetic fields. This problem is a prototypical example in which an increasing magnetic flux generates a finite line integral of the electric field around a closed loop that surrounds
Premium Maxwell's equations Electromagnetic radiation Magnetic field
Field Analysis and Modeling -Electrostatics Project- By Popescu Ciprian FILS‚ Group 1222E Index 1. Data of the project a. Initial values for elements b. Table with elements and groups of elements c. Points of measurement d. Geometric model 2. Changing the polarity of the lower capacitor 3. Test 1. Testing meshes 4. Test 2. Changing the electric permittivity of the dielectric 5. Test 3. Changing the charges of the conductors 6.
Premium Electric charge Electromagnetism Fundamental physics concepts
qualitiviely analyze principles of magnetic fields and forces‚ their sources‚ and interactions with moving charged particles. To accomplish this lab‚ we will do 5 stations‚ and we need these instruments: several magnets which have different sizes‚ a board‚ a piece of alumium metal‚ a battery‚ two pieces of wires‚ a nail‚ a 180cm copper pipe. Station1‚ we tilt a smooth board and roll the neodymium down it‚ the track is curve because the magnetic field of the earth is affecting the magnet. The effect
Premium Magnetic field Electromagnetism