DYNAMIC ELECTRICALElectricity generated by a moving electric charge in a conductor. Direction of the electric current (I) which arise in the opposite direction to the direction of conductor motion of electrons.
Electrical
charge in a certain amount that penetrated a section of a conductor in
units of time called a strong electric current. So strong electric current is the amount of electrical charge flowing in a wire conductor per unit time. If the time t flow of electric charge Q, the strong electric current I is:1
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experts have signed an agreement that the direction of the electric current flows from the positive pole to the negative pole. So the electric current direction opposite to the direction of flow of electrons.
POTENTIAL OR DIFFERENT VOLTAGE (V)
The
electric current from the positive pole to the negative pole and the
electrons flow from the negative to the positive pole, due to the
potential difference between the positive pole to the negative pole,
where the positive pole has a higher potential than the negative pole.
The
potential difference between the positive pole and the negative pole in
an open state called electromotive force in a closed state and called
voltage clamp.
RELATIONSHIP BETWEEN ELECTRICAL CURRENT STRENGTH (I) AND VOLTAGE (V)
The relationship between V and I were first discovered by a physics teacher from Germany by the name of George Simon Ohm. And more commonly known as Ohm's law, which reads:
Big
strong electric current in a conductor is directly proportional to the
potential difference (V) between the ends of the conductor as long as
the temperature remains conductive.
The
results for the potential difference (V) with strong currents (I) is
called electrical resistance or resistance (R) with unit ohm.
RELATIONSHIP BETWEEN THE TYPE OF RESISTANCE WIRE WIRE AND WIRE SIZE
Barriers or resistance allows you to adjust the amount of electrical current strength flowing through an electrical circuit. In
radio and television, the resistance is useful for maintaining a strong
current and voltage at a certain value in order for the other
electrical components to function properly.
For various types of wire, wire length and cross-section are different from the following relationship:LAW I Kirchoff
In the flow, electrical current also had branches. When
electric current flows through branching, the electric current is
divided at any branching, and the amount depends on the presence or
absence of the branch barriers. If
the resistance at the branch then consequently the electric current
through the branch is also shrinking and conversely if the branch, a
small obstacle then the electrical current flows through the branches of
a great power.
I Kirchoff's Law reads:
The number of strong electric current into a node equals the number of strong electrical current coming out of the node.
Kirchhoff's law I do not actually call it the law of conservation of other electric charges.
I Kirchhoff's law can be written mathematically as:
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LAW II Kirchoff
Kirchhoff's
second law on the use of closed circuit that is because there are sets
which can not be simplified using a combination of series and parallel.
Generally
this occurs when two or more emf in the circuit that are connected by a
series of complicated that simplification as this requires special
techniques to be able to explain or operate the circuit. So Kirchhoff's Law II is a solution for those circuits which reads:
In a closed circuit, the algebraic sum of electromotive force (ε) with a voltage drop (IR) is equal to zero.
Kirchoff's second law is formulated as follows:
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ELECTRICAL ENERGY
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Since q = I. t, where I is a strong electric current and t the time, then great effort
performed are:
W = V. I. t
Since V = I. R, then the huge effort that W is equal to the electrical energy
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ELECTRIC POWER
Great Power (P) on a power tool is a great electrical energy (W) is emerging per unit time (t), we write.
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