Notesale: Turn your study into money

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STUDY NOTES NO
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Specifically, you are also expected to:
1
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describe how objects can be charged in different ways
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When you rubbed the two
balloons across your hair and brought them near
each other, the balloons repel each other
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Objects are made up of an enormous number of neutrons, protons, and
electrons
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The difference in the
number of protons and electrons determines an object’s electric charge
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Negatively
charged objects have more electrons
than protons; while, positively charged
objects have fewer electrons than
protons
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The atomic composition of
different materials gives them different
electrical properties
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When you rub the balloon on your hair, some of the electrons from your hair are transferred
to the balloon
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This process involved is called
charging by friction
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This is generally true in
any charging process
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This force is called electric force which acts
on charges
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The interactions between the charges are summarized in the
following law:

Charging by Induction
Polarization
Polarization is the rearrangement of charges within a neutral object when it is placed near a
charged object
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As a result, the portion of the can closest to
the negatively charged balloon will have an excess of positive charge likewise the portion farthest
from the balloon will have a negative charge
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Although the total charge on the can will be zero, the opposite sides will have an induced charge
(a charge produced by charging two objects without actual contact)
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When
discharging is done by means of providing a path between the charged object and a ground, the
process may be referred to as grounding
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Grounding is necessary in electrical
devices and equipment since it can prevent the build-up of excess charges where it is not needed
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This is an example of grounding
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The hand provided a
path for negative charges to move away from the can
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The can has acquired a net positive charge
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Charging by Conduction
The behavior of a charged material depends on its ability to allow charges to flow
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In contrast, insulators
are materials that hinder the free flow of charges
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Prepared by:

School:

JESUSITO P
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TOMAS MASCARDO NATIONAL HIGH SCHOOL

Teacher II



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