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Electricity (Elements (resistor, battery, cell, switch, Fuse, Anmeter,…
Electricity
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Current
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Electnc current is the charge, or number of electrons, that flows through a
conductor per second
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Series circuits
he current that flows through all the elements is identical, and the
total voltage is the sum of the voltages across each element.
The total resistance, or equivalent, of the arcuit is.
R = R, + R, + R, +
lf we connect several generators in series, the voltage wifl be:
V = V + V + V + . . .
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Voltage
Voltage or tension is the energy that a battery or
generatorcan provide for
each electron. It is measured in volts
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Parallel circuits
The potential difference of each element is the same, but the
current that flows through each branch is different.
h e equivalent resistance is
Ohm's Law
1 he resistance of the component is the quotient of the potential
difference across it over the current flowing through it Th s equation
is called Dhm's Law:
Mixed circuits
lnvanably, they maintain the current that flows through the elements
in senes, and the voltage of the elements in parallel.