by parthiban.n. static electricity electrostatic turboelectric series electrically charge rub...
TRANSCRIPT
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ByPARTHIBAN.N
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Static electricityElectrostaticTurboelectric seriesElectrically chargeRubNegative chargePositive chargeProtonElectron
NeutralCombHairAttract RepulseNeutron
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A stationary electrical charge that is built up on the surface of a material
OR
Imbalance of Positive and Negative charges
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+
–
Proton (positive charge)
neutron (neutral)
electron (negative charge)+
+
+
–
––
atom nucleus
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Only electrons may be lost or gained
The object If the atom loses electrons, it will become +.If the atom gains electrons,
it will become –
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Rubbing materials does NOT create electric charges. It just transfers electrons from one material to the other.
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When a balloon rubs a piece of wool...
– electrons are pulled from the wool to the balloon.
The balloon has more electrons than usual.
+++
++
–––––
The balloon : – chargedThe wool : + charged
wool
+
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Some Cartoon which show’s formation of STATC ELECTRICITY
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Causes of static electricityContact-induced charge separation
Turboelectric effectPressure-induced charge separation
Piezoelectric effectHeat-induced charge separation
Pyroelectric effectCharge-induced charge separation
Electrostatic induction
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Static build-up in flowing flammable and ignitable materials
The flowing movement of finely powdered substances or through mechanical agitation can build up static electricity.
Dust clouds of finely powdered substances can become combustible or explosive.The ability of a fluid to retain an electrostatic charge depends on its electrical conductivity. When low conductivity fluids flow through pipelines or are mechanically agitated, contact-induced charge separation called flow electrification occurs.
Fluids that have low electrical conductivity (below 50 pico siemens/m), are called accumulators.
Fluids having conductivities above 50 pico siemens/m are called non-accumulators
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"Static Electricity" means "High Voltage"
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"STATIC ELECTRICITY" is not unmoving, it really means "HIGH VOLTAGE ELECTRICITY."
Static electricity is high voltage?.....
High voltage has all the characteristics of "static electricity."
STATIC ELECTRICITY is HIGH VOLTAGE at low current.
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WHAT'S THE DIFFERENCE BETWEEN“STATIC” AND “CURRENT” ELECTRCITY How are "Static" and "Current" different?
THERE ARE TWO KINDS OF ELECTRICITY, STATIC ELECTRICITY AND CURRENT ELECTRICITY. STATIC ELECTRICITY IS ELECTRICITY AT REST, WHILE CURRENT ELECTRICITY IS ELECTRICITY IN MOTION."
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"Static" Electricity “ versus "Current" Electricity
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Static dischargeLightningLightning is a dramatic natural
example of static discharge
The static charge in air typically breaks down in this way at around 10,000 volts/centimeter (30 kV/cm) depending on humidity
The discharge superheats the surrounding air causing the bright flash, and produces a shock wave causing the clicking sound.The flash occurs because the air in the discharge channel is heated to such a high temperature that it emits light by incandescence.The clap of thunder result of the shock wave created as the superheated air expands explosively
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Removal and prevention of static electricity
ANTISTATIC AGENT
1. Humidifier
2. Air Ionizers
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ANTISTATIC DEVICE
Antistatic Bag Antistatic Strap
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When a + charged rod is put near neutral object,
______________ is induced on the side of the object
near the rod and _____________ is induced on the side
away from the rod. The rod can attract the netural object
because _________ between rod and – induced charge >
the ________ between rod and + induced charge.
How does a positively charged rod attract a neutral object?
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When a + charged rod is put near neutral object,
______________ is induced on the side of the object
near the rod and _____________ is induced on the side
away from the rod. The rod can attract the netural object
because _________ between rod and – induced charge >
the ________ between rod and + induced charge.
How does a positively charged rod attract a neutral object?
negative charge
positive charge
attraction
repulsion