Basic electricity
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Electricity is the flow of electric charge, which is generated from converting primary energy sources like coal into a secondary energy source. Atoms are the basic building blocks of matter and contain protons with a positive charge, neutrons with no charge, and electrons with a negative charge that orbit the nucleus. Electricity occurs when electrons are pushed out of their normal orbits in atoms and move from one atom to another. Electricity powers devices through either series or parallel circuits and is integral to many aspects of modern daily life.
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Basic electricity
- 2. What is Electricity? Electricity is the result of the presence and flow of electric charge. It is a secondary energy source which means that we get it from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary sources.
- 3. In order to understand how electric charge moves from one atom to another, we need to know something about atoms: Everything in the universe is made of atoms Atoms are so small that millions of them would fit on the head of a pin. There are other smaller particles than atoms, which are inside of them.
- 4. Atoms: Are made out by three basic small particles: Protons: carry a positive charge. (+) Neutrons: carry a neutral or no charge.(0) *Protons and Neutrons join together to form the Nucleus (which is in the central part of the atom. Electrons: carry a negative charge, and surrounds the nucleus. (-)
- 5. How it works? The electrons in the shells closest to nucleus have a strong force of the protons. the attraction to Sometimes, the electrons in the outermost shells do not. These electrons can be pushed out of their orbits. Applying a force can make them move from one atom to another. These moving electrons are electricity.
- 6. One of the common uses of electricity are: series circuit : is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through each resistor. The total resistance of the circuit is found by simply adding up the resistance values of the individual resistors. For example: Christmas tree lights
- 7. A parallel circuit : is a circuit in which the resistors are arranged with their heads connected together, and their tails connected together. The current in a parallel circuit breaks up, with some flowing along each parallel branch and re-combining when the branches meet again. The voltage across each resistor in parallel is the same.
- 8. Electricity in our daily life