Lecture Notes: Basic Electricity Fall 2011 This course module introduces the basic physical models by which we explain the flow of electricity. The Bohr model of an atom – a nucleus surrounded by shells of electrons traveling in discrete orbits – is presented. Electrical current is described as a flow of electrons. Ohm’s law – the relationship between voltage‚ current and electrical resistance – is introduced. Learning Objectives Understanding the basic principles of electricity is a foundational
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Basic Laboratory Techniques Hari D. Mandal‚ PhD. Objectives 1. To use common laboratory apparatus in measuring mass‚ length‚ volume‚ temperature‚ and density 2. To compute the accuracy and the precision of a set of scientific measurements 3. To apply the concept of significant figures in reporting correctly scientific measurements Materials and Equipment Ruler‚ meter stick‚ 10 mL graduated cylinder‚ 50 mL graduated cylinder‚ small and large test tube‚ 50 mL and 150 mL beakers
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Static Electricity Virtual Lab Name: __________________________ Physical Science Date: ___________________________ Part I: Balloons and Static Electricity: Go to https://phet.colorado.edu/en/simulation/balloons-and-static-electricity 1) Before moving the balloon‚ how many positive and negative signs are on the balloon? 4 positive and 4 negative 2) Use your mouse pad to rub the balloon against the sweater. -What are the charges that are NOW found on the balloon? All the sweaters negative
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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
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Diodes Diodes are components that allow current to flow in only one direction. They have a positive side (leg) and a negative side. When the voltage on the positive leg is higher than on the negative leg then current flows through the diode (the resistance is very low). When the voltage is lower on the positive leg than on the negative leg then the current does not flow (the resistance is very high). The negative leg of a diode is the one with the line closest to it. It is called the cathode. The
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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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Basic Lab Measurements and Equipment Purpose This lab experiment displays the accuracy of scientific measuring equipment. This experiment also helps to familiarize the students with these instruments. Procedure: Measure Volumes and Masses 1. Obtain a 400mL beaker and record its mass in grams. 2. Add 40mL of water to the beaker and record the volume. 3. Records the beaker’s mass now with the added water 4. Transfer the water from the beaker to a 50mL graduated cylinder and record the measurement
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CHM 131(GENERAL CHEMISTRY) TITLE: BASIC LABORATORY TECHNIQUES (EXPERIMENT 1) NAME: MURSYIDA BINTI MOHD DAKROH(ID: 2015883226) LAB PARTNERS:NABILA SOFEABINTI ZAWAWI (ID: 2015850932) :NUR ANISLYANA BINTI TAMAM (ID: 2015832718) :NUR AUNI BINTI MOHD RADZIFF (ID: 2015863252) LECTURER NAME: MADAM DYIA SYALEYANA BINTI MD.SHUKRI PROGRAM: RAS1201B DATE OF EXPERIMENT: 30 JUNE 2015 OBJECTIVE 1. To learn the qualitative and quantitative aspect
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Electricity what is it? Electricity is also known as electrical energy which is the flow of moving electrons. Electrons are from atoms which have three different components with different charges. There are protons with a positive charge‚ neutrons with a neutral charge‚ and electrons with a negative charge. But the negatively charged electrons are useless if they don’t have a circuit to travel on. A circuit is a system that is made of three different components and they are: an energy source
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Daniel Cho Period 7 4/7/15 Electricity and Magnetism Spring Lab Project Electric Field Hockey Objective: Write two paragraphs. Explain the challenges of scoring goals in this game. Be sure to include in your explanation the terms positive and negative charge‚ electric field line and explain how mass affects the motion of the “puck.” This simulation project is all about getting the puck into the goal while surround the puck with using few positive and electric charges. The positive charges
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