Current electricity class 12 notes physics mycbseguide. Electrical formulae for calculating amps, horsepower. We can find the following quantities by using below formulas chart electrical formulas in dc full load current in amperes alternating current ac motors alternating current ac single. Electricity has varied applications it acts as a tool to provide power to electrical devices. I want all the formulas used in chapter electricity. Scribd is the worlds largest social reading and publishing site. Basic electrical power fundamentals 46 kva is larger than kw because loads are inductive such as motors, discharge lighting, reactors and more current is required to keep the magnetic field energized than is turned into heat kw.
Current electricity formula sheet electrical resistivity and. We have prepared this file keeping cbse syllabus in mind. Cbse class 12 physics current electricity formulae. Charge and current the concept of electric charge is the underlying principle for explaining all electrical phenomena. Electricity basics electrical charge voltage current resistance ohms law an ohms law experiment resources and going further.
Jan 28, 2018 download physics summary and formula book for class 10 pdf other important class 10 pages where you can find science and maths study material are. The important notes of physics for current electricity pdf download are. If rate of flow of charge is not constant then the current at. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionised gas plasma. Worked example number 1 calculate the heat produced by an electric iron, which has a resistance of 30 ohms and takes a current of 3 amperes when it is switched on for 15 seconds. Learning every student to get better marks in examinations. Oct 30, 2018 current electricity class 12 notes pdf. In order to construct a building that will last into the future, a strong foundation is a prerequisite. If the voltage across a bulb decreases by 1%, then the percentage change in its power output is. This is the electric potential energy of the point divided by the charge at that point or electric potential energy per unit charge. Electricity basics electrical charge voltage current resistance ohms law an ohms law experiment resources and going further electricity basics when beginning to explore the world of electricity and electronics, it is vital to start by understanding the basics of voltage, current, and resistance. R is the resistance in ohms and controls the flow of electric current. The current density, which we have defined as the current thr ough unit ar ea nor mal to the curr ent is also dir ected along e, and is also a vector j j.
Free pdf download of physics class 12 chapter 3 current electricity formulas prepared by expert teachers at. Mar 24, 2019 important notes of physics for neet, jee for current electricity are useful for all aspirants preparing for entrance exams including jee, neet. Download class 10 physics formulas and summary pdf. Commercial power lines make available about 100 amps to a typical home. Current electricity notes class 12th pdf download physics tutoria. Electric power calculator calculation general basic electrical formulas mathematical voltage electrical equation formula for power calculating energy work power watts calculator equation power law current charge resistance converter ohms law and power law power formulae formulas understandimg general electrical pie chart two different equations to calculate power electricas ohms law audio. Pradeep kshetrapal current electricity genius physics. Important notes are also helpful for revision when you have less time and have to study many topics. Learn and practice from current electricity quiz, study notes and study tips to help you in neet physics preparation. The flow of free electrons in the same general direction from atom to atom is referred to as current and it is measured in amperes amps or a. Dec 14, 2015 complete electrical formulas sheet electrical engineering blog. Current electricity part 1 formula list and important points in this video we will discuss all the formulas and important points of the chapter current electricity. Jul 02, 2019 current electricity class 12 notes chapter 3 1.
Electricity formulas are applied in calculating the unknown electrical parameters from the known in electric circuits solved examples. This is possible only when you have the best cbse class 12 physics study material and a smart preparation plan. Formula booklet physics class 12 chapter current electricity. Current electricity notes class 12th pdf download physics. In electric circuits this charge is often carried by moving electrons in a wire. Cbse class 12 physics revision notes for chapter 3 current electricity free pdf download. The current density, which we have defined as the current thr ough unit ar ea nor mal to the curr ent is also dir ected along e, and is also a vector j j ee. The conventional direction of electric current is the direction of. Electrical circuit calculations series circuits many circuits have more than one conversion device in them i.
Fundamentals of alternating current 3 figure 121 sinusoidal wave values. The restriction to the flow of electrons through a conductor is called resistance and it is measured in ohms and abbreviated. The charged particles whose flow in a definite direction constitutes the electric current are current carriers. P power watts, w, js u voltage volts, v i current amperes, a r resistance ohms. It has all important formulae and concepts you can glance at and. Text headings in each module are linked to and f\ rom the table of contents for that module. If the circuit components are connected end to end to form a single loop it is a seriescircuit. Physics formulas from mechanics, waves, optics, heat and.
Current electricity formula sheet electrical resistivity. Current electricity neet physics mcqs, study notes. Electrical formulae for current, voltage, resistance, power and conductivity. Cbse notes class 12 physics current electricity aglasem.
The units and formula for various electrical parameters included in. In series combination, the current remains the same through the resistance network. Fundamentals of alternating current school of electrical. Candidates who are ambitious to qualify the class 12 with good score can check this article for notes. The formulas used in class x are1 i,currentq,charget,time. Current strength, in a conductor, is defined as the rate of flow of charge across any cross section of the conductor. Introduction physical phenomena associated with the presence and flow of electric charge is known as electricity. Ac and dc current this is the third characteristic of electricity. Electric current i the rate of flow of charge through any crosssection of a wire is called electric current flowing through it. Test each object to determine if it is a conductor of electricity or an insulator. Example 1 determine the current flowing through the electric heater have p. Here is our collection of printable science worksheets for teaching students about static and current electricity. Also, the most basic quantity in an electric circuit is the electric charge.
Download cbse class 12th revision notes for chapter 3 current electricity in pdf format for free. Basic electronics chapter 2, 3a test t5, t6 basic electrical principles and. Cbse class 12 phyiscs current electricity formulae. Volt unit of electrical potential or motive force potential is required to send one ampere of current through one ohm of resistance. You can also call it as revision notes for current electricity or cheat sheet of current electricity. Please practice handwashing and social distancing, and check out our resources for adapting to these times. Revision notes on electric current, resistance, chemical effect of current and heating effect of current provides by askiitians. Cbse notes class 12 physics current electricity aglasem schools. Three phase formulas do not use 2 for threewire, two phase circuits, the current in the common conductor is 1. One ampere is 6,280,000,000,000,000,000 electrons passing a point in one second.
These are the current electricity class 12 notes prepared by team of expert teachers. To convert a number which includes the k prefix to units, multiply the number preceding the k by 1,000. Current electricity notes class 12th pdf download physics tutoria electric current is defined as the amount of charge flowing through any cross section of the conductor in unit time. Doehdbk1011192 june 1992 doe fundamentals handbook electrical science volume 1 of 4 u. Jan 12, 2018 current electricity part 1 formula list and important points in this video we will discuss all the formulas and important points of the chapter current electricity. Engineers mininotebook formulas, tables and basic circuits author. Dec 24, 2019 class 12 physics current electricity get here the notes for class 12 physics current electricity. A common unit of electric current is the ampere, a flow of one coulomb of charge per second, or 6. When beginning to explore the world of electricity and electronics, it is vital to start by understanding the basics of voltage, current, and resistance. A division of tandy corporation fort worth, tx 76102 rad. Common electrical units used in formulas and equations are. The directed rate of flow of electric charge through any crosssection of a conductor is known as electric current. Engineers mininotebook formulas, tables and basic circuits led current led voltage drop forrest m. Cbse class 12 physics chapter 3 current electricity formula.
V s supplied voltage or total voltage across impedance network. The rate of flow of charge through a cross section of some region of a metallic wire or an electrolyte is called the current through that region. Engineers mininotebook formulas, tables and basic circuits. I is the current in amps and is the count of electrons passing a particular point per second. The rate of flow of chrge through the conductor is called electric current. So, go ahead and check the important notes for class 12 physics current electricity. To register online physics tuitions on to clear your doubts from our expert teachers and solve the problems easily to score more marks in your cbse board exams. Electricity formulas electricity is the flow of charge in a conductor from anode to cathode. It is only applicable when the resistance network is connected in a parallel combination. Download cbse class 12 physics current electricity formulae in pdf, physics chapter notes, class notes mind maps formulas revision notes cbse class 12 phyiscs current electricity formulaefor. Cbse class 12 physics revision notes for chapter 3. We really hope that this class 10 physics formulas and summary pdf will help students in the revision for their examination.
This portable document format \ pdf \ file contains bookmarks, thumbnails, and hyperlinks to help you navigate through the document. Know more about these in current electricity class 12 notes. Electrical current flows from a region of high charge or potential to a region of low potential. Formula booklet physics class 12 chapter current electricity entrancei. Current electricity class 12 notes chapter 3 learn cbse. It has all important formulae and concepts you can glance at and grasp everything in one go.
Finding motor hp horse power, kva kilovolt ampere kw input, when motor hp is known kw kilowatts amperes, when kva is known. Cbse class 12 physics current electricity formulae concepts. The centimetregramsecond units of current is the electrostatic unit of charge esu per second. Current electricity formula sheet free download as pdf file. The attached concepts will help the student to understand the chapter and score better marks in the examinations. If physical conditions of a conductor such as temperature remains unchanged, then the electric current. Download physics summary and formula book for class 10 pdf other important class 10 pages where you can find science and maths study material are. Energy power x time power 12r 32 x 30 270 watts energy power x time 270 x 15 4050 joules worked example number 2. This current electricity pdf explains the flow of electric current, dc and ac current, simple experiment, and the basic law of electricity ohms law formula classes class 1 3. Cbse class 12 physics revision notes for chapter 3 current. Voltage current resistance and electric power general.
Ohm unit of resistance one ohm is the resistance offered to the passage of one ampere when impelled by one volt. Cbse class 12 physics chapter 3 current electricity formula free pdf free pdf download of physics class 12 chapter 3 current electricity formulas prepared by expert teachers at. The concepts should be clear which will help in faster learning. Revision notes for current electricity class 12 notes and get score high in exams. Electricity and electrical phenomenon have a lot of applications in our day to day life and they also gives a wide variety of wellknown effects, such as lightning, static electricity, electromagnetic induction and the flow of electrical current. Cbse class 12 phyiscs current electricity formulaefor. The modules listed in the overview are linked to the corresponding pages. F n x i 2 x magnetic constant x a 2 x g 2 g length of the gap between the solenoid and a piece of metal, n number of turns, magnetic constant 4 x pi x 10 7. The number of electrons that flow through a conductor s crosssection in one second determines amps. Another method of calculating demand if the phases pull di. Current i current is the quantity of electrons passing a given point.