Free Power. Point Presentations about Electricity for Kids & Teachers (K- 1.

Then there is electricity,--the demon, the angel, the mighty physical power, the all-pervading intelligence. If you are searching for biographies of scientists or inventors who worked with electricity, you may want to go to our companion webpage.

Electrical Theory, Basic Electrical Theory. Electricity has been part of our lives since prehistoric times, so it would be misleading to say that anyone actually discovered it. Ancient man witnessed electricity in the form of lighting every time there was a thunderstorm.

Some people see electricity as a powerful message from the gods, but today , electricity is more fully understood. We use electricity hundreds of times every day- when ever we flick a light switch, turn on the television or use a telephone. This section will help us to learn basic concepts of electricity.

Voltage, Current, Resistance, Ohm's Law which connects them. The atoms have neutrons, electrons and protons as its. The electrons carry negative charge while protons. Using these. definitions, the electric charge is the extent to which it contains. The matter is said to be positively charged if the number of protons are more than the number of electrons in an atom of the matter while the matter is said to be negatively charged if the number of protons are less than the number of electrons in an atom of the matter. The electrical charge is measure in the coulomb (symbolized C), where 1- C is equal to 6. Generally it is written as 6.

Since the electrons flows from negative (low potential) terminal to positive terminal (high potential), the electric current flows from positive terminal to the negative terminal. The electric current always follows the path of low resistance. The electric current will flow with ease if the resistance of the metal wire or conductor is less. The resistance of the metal wire or conductor can be defined by: $R$ = $\frac. How Do I Write Roman Numerals On Microsoft Word. This is known as Ohm’s law. Mathematically, we can write ohm’s law as; $I$ = $\frac. Although from the name it appears to be force but the e.

The electric circuit is formed when the electric current finds a path with low resistance. We have often seen that while working, without wearing proper insulator shoes, we experience an electric shock. This shock is due to the low resistance path offered by our body towards the ground. Wilco Airbus A330 Fsx Downloadable Aircrafts. In this case our body is acting as the electric circuit. The above shown diagram is the simple electric circuit containing voltage source E, and resistance R. The Electric circuits plays a great role in electronics which makes the flow of desired current in the easier way. Transistor is the crucial and important element in electronic circuit.

Magnets and Electromagnets - science fair projects and experiments: topics, ideas, resources, and sample projects by scientific field. 2.3: Electron-volts: 2.4: A Point Charge and an Infinite Conducting Plane: 2.5: A Point Charge and a Conducting Sphere: 2.6: Two Semicylindrical Electrodes. 1 Electricity and Magnetism Regular Electricity and Magnetism Worksheets and Solutions ER1: Charge and Coulomb’s Law 3 ER2B: Electric Fields 7 ER2T: Electric Fields 11. Magnetism and Electricity questions for your custom printable tests and worksheets. Browse our pre-made printable worksheets library with a variety of. Today’s Wonder of the Day was inspired by katelyn.

It is a three terminal device, out of these three terminals one is used to ON or OFF the transistor. The three terminals are known as BASE, COLLECTOR and EMITTER. The transistor has two junctions of semiconductors. The Transistors are of two types. NPN Transistors. PNP Transistors.

The surface of material may contains some electric charges which constitutes the static electricity on that material. These static charges might come on the surface either through the contact with more charged body or through the extra ions presents in the air.

You might come across a scenario where on a dry weather day if you touch a door knob of metal, you might got slight electric shock, it is due to the static charges present on the surface of the door knob. The charges on the surface of door knob may be accumulated by the interaction with the more charged body. It states that when two charges are placed at a distance d, from each other than the force experienced by them due to each other is directly proportional to the multiplication of the charges and inversely proportional to the distance between them. If we consider two charges, Q1 and Q2 are placed at a distance of d then the force on each of them would be.

F$ = $k$$\frac. The positive force indicates that the charges repel each other. The positive force indicates that the charges repel each other. The negative force indicates that the charges attract each other. The electric field is the force experienced by a charge from the charge surrounded by the electric field. From this discussion we can say that charges generate electric field. Michael Faraday introduced the concept of Electric Field.

It is a vector quantity and is measured in Volts per meter (Vm- 1) or Newton per Coulomb (NC- 1). It is relationship between distribution of electric charges to the resulting electric field through a closed surface. Its S. I unit is given by Coulomb/volt also called as Farad. Resistance is the property of the material by the virtue of which it opposes flow of electrons through the material. Equivalent resistance is the resistance offered by the sum total of all the resistance taken.

There are two types of circuits: Series circuit. Parallel circuit. Resistance in series. The circuit in which resistances are connected end to end so that the same current flows through all the resistances is called a series circuit as shown in the figure: By ohm’s law, voltage across various resistances is:                                                               V1 = IR1, V2 = IR2, V3 = IR3. Now the total Voltage is given by                            V = V1 + V2 + V3 = IR1 + IR2 + IR3. V = I (R1 + R2 + R3)Or $\frac.

RT is called the total or equivalent resistance given as: $\therefore$ RT = R1 + R2 + R3. Hence when a number of resistances are connected in series, the total resistance is equal to the sum of individual resistances. Resistance in Parallel.

When one end of each resistance is joined to a common point and the other end of each resistance is joined to another common point so that there are as many paths for current flow as the number of resistances, it is called parallel circuit. The resistance in parallel circuit is: Now, current through respective resistance is                                               I1 = $\frac.