Electrostatics System
Electrostatics System
The Electrostatics System introduces basic concepts of electrostatics and provides a good basis for understanding and quantitatively assessing electrostatics. A full set of accessories are supplied for study charge by friction, conduction and induction.
Laws and principles investigated
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Charging by conduction |
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Charging by friction |
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Charging by induction |
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Conducting sphere |
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Investigating Electric charge |
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Principles of the Electroscope |
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Faraday ice pail experiment |
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Volta’s electrophorus experiment |
There are three modes of electrifying an object: friction, conduction and induction.
A positive charge means that the object has lost electrons and is no longer electrically charged and a negative charge means that the object has gained electrons.
In the picture shows how to induce a charge by using friction by rubbing two surfaces together.
List of the experiments detailed in the instructio
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Concept of static charge |
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How to use the Electroscope |
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Charges on an Electroscope |
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Electrophorus principles using electrostatic induction |
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Investigating different kinds of electric charge |
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Production of charges, equal and opposite |
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Charge transfer |
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Experiments charging by conduction, friction and induction |
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Principle of the Faraday Ice Pail |
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Charge distribution in electric fields |
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Charge distribution in a Faraday Ice Pail and in a Conducting Sphere |
Electroscope usage
Using the electroscope to measure the charge by induction and conduction.
An electroscope is an instrument for detecting the presence of static electricity. It consists of two thin metal leaves suspended from a metal hook. When the hook is brought near a source of static electricity, some of the electrons in the hook are pushed to the leaves (if the source is negative) or pulled up to the hook from the leaves (if the source is positive). Either way, the leaves are now charged the same way as each other or so they repel each other. The amount they open up is proportional to the charge of the source (if the sources
are always held at the same distance from the hook).
Induction
Induction charging is a method used to charge an object without actually touching the object to any other charged object. If such a charged rod is brought near to the hook of an electroscope, it will induce the similarly charged electrons to move away from the rod and it the leaves. Since both leaves will have the same charge they will repel each other and move apart.
Conduction
Charging by conduction means that the charging rod actually touches the electroscope’s hook. Since there is contact, electrons from the knob would flow onto a positive rod or off of a negative rod. Charging by conduction leaves the electroscope with a residual charge identical to that of the charging rod.
When the electrified rod touches the electroscope it is possible to observe that the leaves of the instrument move apart one from the other. The negative charge induced by the metallic rod causes a repulsive action that moves them apart. Using the graduated scale
we can measure the size of this charge.
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Preis in anderen Währungen/ Price in other currencies |
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