Physics 231 lecture 51 fall 2008 current, resistance, and electromotive force. Higher physics student resources lesmahagow high school. On the other hand, potential difference pd is the energy joules per unit coulomb of charge converted from electrical energy inside the circuit to any. Below you will find our collection of revision notes and video tutorials. A crash course in particle physics cox part 1 hubble and red shift part 2. This pdf textbook covers all the core and supplement material and can be used by students following both the core and extended syllabuses. In a circuit, electromotive force is the energy per unit charge converted from the other forms of energy into electrical energy to move the charge across the whole circuit. It is equal to the potential difference across the terminals of the cell when no current is flowing. This new edition follows the syllabus exactly and is written in two parts, reflecting the as and a level section division of the. See more ideas about electromotive force, presentation design and physics. Physics notes form 1 free download kcse revision notes pdf. Study notes physical science grade 12 stanmore secondary. Physics combined science trilogy revision booklet 3 gcse command words command word definition example question example answer state, give, name, write down short answer only and does not require an explanation.
Physics is all about articulating the things rather than memorizing them up. A man blows into one end of a utube containing water until the levels differ by 40. Internal resistance of a battery, emf, cell terminal voltage, physics. This phenomenon is called electromagnetic induction. Electromotive force spm physics form 4form 5 revision notes. Higher physics homework unit 2 electricity exercise 7 ac, current, voltage, power and resistance exercise 8 emf and internal resistance exercise 9 capacitance exercise 10 electrons at work. Alevel physics edexcel 2015 topic 3 electric circuits. It is a quick reference guide that is suitable for whether you are studying for alevel, international baccalaureate, higher or advanced higher physics. One terminal of the device becomes positively charged, the other.
Physics revision session 12 electromagnetic spectrum gcse. Electromotive force, abbreviation e or emf, energy per unit electric charge that is imparted by an energy source, such as an electric generator or a battery. Voltage has many sources, a few of which are shown in figure \\pageindex2\. Emf is the energy joules per unit coulomb of charge transferred from chemical energy inside the actual battery into electrical energy, so it basically deals with the battery itself.
Igcse physics book free download pdf gcecompilation. Internal resistance, emf and potential difference scool. A couple of the sheets have been differentiated down for students with downs syndrome. Written by expert teachers for the cie igcse 91 0972 ag 0625 syllabus. Emf is the amount of energy of any form that is changed into electrical energy per coulomb of charge. Physics igcse 2012 exam revision notes by samuel lees and adrian guillot 1. The emf is not a force at all, but the term electromotive force is used for historical. All resources are updated for the latest aqa physics specification. Batteries and cells have an internal resistance r which is measures in ohms w. This is a booklet for low ability students covering a lot of the forces module. Alevel physics data and formulae for use in exams from the june 2017 series onwards version 1. For the levels to differ the pressure p1 must be greater than p2, hence.
It is visual and easy to comprehend with cloze passages and word banks lots of pictures and colour. Cambridge igcse physics 3rd edition free download pdf this new edition has been written by experienced authors and teachers to support the latest syllabus for cambridge international examinations igcse physics 0625. Electromotive force is defined as energy per unit charge. Magnetic fields concept magnets and electromagnets magnets and the compass advanced animation magnetic force current in bfield motor lab video the generator faradays electromagnetic lab faradays law electromagnetism and radio waves right hand rule applications and skills. Physics formulas basic formulas for physics with examples. Internal resistance provides an explanation for varying terminal potential difference under. Year 11 aqa gcse physics revision booklet paper 1 particle model of matter density of materials know the density of a material is defined by the equation. Clear coverage of the latest specification from an experienced author team of examiners and teachers, plus a free students cdrom. Electromagnetic induction hl see the guide for this topic. Electromotive force emf when a conducting wire moves through a magnetic field, a potential difference is created along the wire. When a charge passes through the power supply, it gains electrical energy. All such devices create a potential difference and can supply current if connected to a circuit.
How to get 100% in your leaving cert physics exam without really trying breakdown of time in the exam. The driving force which maintains the flow of current in the circuit is called electromotive force it is denoted by e. It can also be thought of as the energy converted into electrical energy, when 1 coulomb of charge passes through it. Physics makes noteworthy offerings in new technologies that rise from theoretical advances. Physical science paper 1 winter classes 2018 electric circuits. Year 9 aqa gcse physics revision booklet atomic structure and radioactivity models of the atom know. Cambridge international as and a level physics book pdf free download 2nd edition. Edexcel a level physics physics smart notes online.
Cell, battery a combination of cells, solar cell, generator, dynamo, thermocouple. Pocket physics introduction if you are aged 1618 years old and studying physics in uk, this booklet is for you. Determining the direction of force on a charge moving in a magnetic. A special type of potential difference is known as electromotive force emf. When individuals are doing so, one come across many concepts, problems etc. Electromotive force and internal resistance physics. Free physics revision notes on the topic electromotive force. A device that converts other forms of energy into electrical energy a transducer, such as a battery converting chemical energy or generator converting mechanical energy, provides an emf as its output. For the best revision experience, use both the notes and the videos at the same time to help you follow along.
Includes a slide on the core practical 3, measuring emf and internal resistance. Home emf risk video physics revision session 12 electromagnetic spectrum gcse science physics 91 previous next. Electromotive force cie igcse physics revision notes. A presentation on emf and internal resistance for alevel physics edexcel 2015 topic 3 electric circuits. Plum pudding model of the atom and rutherford and marsdens alpha experiments, being able to explain why the evidence from the scattering. Physics 231 lecture 52 fall 2008 current current is the motion of any charge, positive or negative, from one point to another current is defined to be the amount of charge that. For each of the exam boards below, there are revision notes, factsheets, questions from past exam.
The power supply is said to have an electromotive force, or emf. Energy is converted from one form to another in the generator or battery as the device does work on the electric charge being transferred within itself. The internal resistancer of a cell is a very small resistance. Alevel physics specimen data booklet physics author. Physics revision session 12 electromagnetic spectrum gcse science physics 91 body shield improved my energy level. Electromotive force emf, denoted and measured in volts, is the electrical action produced by a nonelectrical source. Higher physics summary notes unit 1 our dynamic universe. Instead, it is the energy gained by the charge that comes from the chemical energy of the battery. Reading your book and trying to learn it all off will not get you a good grade in biology unless you are one of the few lucky people that have a photographic memory.