2. 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
energy
A 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
3. Causes of 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.
4. 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.
6. 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.
7. 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.
8. 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 :
9.
10. 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
