University of the Philippines College of Science PHYSICS 72 SET A Second Semester 2010-2011 First Long Examination National Institute of Physics 2nd Sem AY 2010-2011 Physics 72 INSTRUCTIONS: Choose the best answer and shade the corresponding circle on your answer sheet. To change your answer‚ cross-out and sign your original answer and then shade your new answer. No computational devices allowed (e.g. calculators‚ mobile phones). Following instructions is part of the exam. Useful
Premium Electric charge Electromagnetism Capacitor
An Introduction to Magnetic Therapy An Introduction to Magnetic Therapy Magnetic Therapy has risen greatly in popularity in the last three decades. As part in the general attention given to alternative medicine and drug-free palliative care‚ Magnet therapy (or magnotherapy) has blossomed into an industry worth an estimated five billion US dollars in 1999.[1] It is safe to assume that with the advent of Internet shopping‚ this figure has risen exponentially ever since. Magnetic products can be roughly
Free Magnetic field Magnetism Magnet
| Maximizing the Range and Power of Inductive Coupling | | | Isaiah Anderson | 1/11/2013 | | Abstract In this project I studied how an electrical current moving through a coil of wire can generate an electric magnetic field and power an electrical load connected to a similar coil of wire. This experiment has been performed before but the goal of this project was to increase the efficiency of the circuit. In this experiment multiple different coils were tested in order to find
Premium Magnetic field Electromagnetism Electric current
International Journal on Hands-on Science [ISSN (print): 1646-8937; (online): 1646-8945] Received July 21‚ 2008; Accepted September 3‚ 2008. Volume 1‚ Number 1‚ September 2008. The Hands-on Science Network’ 2008 ____________________________________________________________________________________________________________________ Alternating Current and Direct Current Generator Pedro Portela‚ João Sepúlveda‚ João Sena Esteves Department of Industrial Electronic University of Minho‚ Campus of
Premium Electrical generator Electromagnetism Alternating current
The Physics Of Soccer Soccer is a sport that’s very challenging and during the course I’ve found physics can also be described as challenging. As far as I was concerned soccer and physics were both challenging and that was all they had in common‚ consequently upon researching them both this I found that I was wrong. For me this was nothing new because I’ve found that physics isn’t a subject that can be skimmed‚ but rather it has to be studied to the finest detail. Those small details if missed can
Premium Energy Force Electromagnetism
ABSTRACT: Our body can be used for linking your mobile phone or MP3 player to a cordless headphone‚ digital camera to a PC or printer‚ and all the accessories you carry around to each other. RedTacton is a new technology that is completely different from wireless and infrared. A transmission path is formed at the moment‚ when a part of the human body is get contact with a RedTacton transceiver. On separating the ends‚ the contact between the receiver and body‚ ends the communication. Human Area
Premium Communication Human body Electromagnetism
1. INTRODUCTION Electrical substation for distribution system is the main supply to convert the high voltage (HV) to low voltage (LV) and the place where load are distributed to the consumers. In Malaysia‚ Tenaga Nasional Berhad Distribution (TNBD) used the 33/0.433kV‚ 22/0.433kV‚ 11/0.433kV and 6.6/0.433kV voltage system for the electrical system to supply for domestic consumer and industrial consumer such as factory which will supplied directly from Transmission Main Intakes (PMU)‚ Main Distribution
Premium Transformer Electromagnetism Circuit breaker
BIOT-SAVART’S LAW OR AMPERE’S LAW FOR CURRENT ELEMENT Biot-Savart’s law deals with the magnetic field induction at a point due to a small current element. Current element A current element is a conductor carrying current.It is the product of current‚I and length of very small segment of current carrying wire ‚dL. Let us consider a small element AB of length dl of the conductor RS carrying a current I. Let r be the position vector of the point P from the current element I dL.and θ be the angle
Premium Magnetic field Electromagnetism
Electricity was first researched by Thales of Miletos around 600BC. He conducted a few experiments on static electricity in which he believed that friction made amber become magnetized. Other than the fact that people knew that eels produced electric shocks‚ electricity was little more than an intellectual curiosity for over 2000 years. Until 1600 when someone from England discovered the lodestone effect when amber with static would attract small objects towards it. In the 18th century‚ Benjamin
Premium Electric charge Electricity Electromagnetism
Since early 2003 the Electrical Inspectorate has been working to raise public awareness of Residual Current Devices (RCDs)‚ with the aim of eventually enforcing the use of these devices as recommended by the standard adopted by the St. Lucia Bureau of Standards for wiring of buildings SLNS/BS 7671: 2001- Requirements for Electrical Installations ¡V IEE Wiring Regulations ¡V Sixteenth Edition. These Regulations though only recently adopted by the Bureau of Standards is the Regulations referred to
Premium Circuit breaker Electric current Alternating current