static electricity

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STATIC ELECTRICITY

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Page 1: Static electricity

STATIC ELECTRICITY

Page 2: Static electricity

Static electricity is an excess of electric charge trapped on the surface of an object. The charge remains until it is allowed to escape to an object with a weaker or opposite electrical charge, such as the ground, by means of an electric currentor electrical discharge. Static electricity is named in contrast with current electricity, which flows through wires or other conductors and transmits energyA static electric charge is created whenever two surfaces come into contact and separate, and at least one of the surfaces has a high resistance to electrical current (and is therefore an electrical insulator

Page 3: Static electricity

Materials are made of atoms that are normally electrically neutral because they contain equal numbers of positive charges (protons in their nuclei) and negative charges (electrons in “shells" surrounding the nucleus). The phenomenon of static electricity requires a separation of positive and negative charges. When two materials are in contact, electrons may move from one material to the other, which leaves an excess of positive charge on one material, and an equal negative charge on the other. When the materials are separated they retain this charge imbalance.

Causes of Static Electricity

Page 4: Static electricity

Examples of Static Electricity are as Follows

1. Rubbing a balloon on your head, and bringing it close to a wall and seeing if it stays mounted.

2. Shuffling your feet across a carpeted floor and then touching a metal object.

3. Rubbing an object (i.e. some sort of plastic scoop) against a material (i.e. cotton) and placing it beside running water.

Page 5: Static electricity

DINAMIC ELECTRICITY

Page 6: Static electricity

Definition of Dinamic Electricity

Dynamic Electricity is the electricity that can be moved. How to measure thestrong currents in the dynamic electric charge divided by time in units of electric charge is coulumb and unit time is seconds.

ohms law can be inferred by measuring thevoltage × current is strong resistance. Resistance value is always the samebecause the voltage is proportional to the strong currents. voltage has unitsof volts (V) and a strong current is ampere (A) and resistance (R) is theohm. The instrument used to measure the potential difference / voltage is avoltmeter and tools used to measure electrical current is kua Amperemeter.

Page 7: Static electricity

Ohm’s Law

In a closed circuit, current flows generated by the voltage source. Thegreater the voltage source, the greater the stronger the electric currentflowing. Current

voltage relationship and a strong electric current was firstinvestigated by a physicist from Germany George Simon Ohm (1787 - 1854)and formulated as Ohm's law, namely; of strong electric currents flowing ina conductor is proportional to the potential difference of the end - the end of the conductor.

Page 8: Static electricity

A conductor resistance The size constraints of a conductor depends among others on the length of the wire conductor, conductor cross-sectional area, and the type of conductor wire is used. If written in the equation is :

Page 9: Static electricity
Page 10: Static electricity

1 Kirchoff law

Kirchoff law, which states;In a series of branching, the number of strong currents in the branch pointequal to the number of strong currents leaving the node