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Resistors
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Resistance is the
opposition
to current flow.
Resistors
are crucial passive circuit elements that
impede
the flow of current and are symbolically represented and measured in
Ohms
(Ω).
Ohm's Law
states that V (voltage) = I (current) * R (resistance).
Resistance
(R) depends on resistivity, length, and inversely on the cross-sectional area of the material.
Resistors are
linear
elements, and their V-I characteristic defines resistance.
Ohm's Law
governs the relationship between voltage, current, and resistance.
Power Rating
defines the maximum power a resistor can handle and is influenced by
voltage
and
current.
Tolerance
indicates the deviation from the nominal resistance value.
Temperature
Coefficient
describes how resistance changes with temperature.
Frequency Response limits the
maximum
frequency at which a resistor can operate.
Stability
refers to how constant resistance remains over time, and
noise
is the unwanted electrical signal.
Fixed Resistors include
Carbon
Composition
Resistor,
Carbon
Film
Resistor,
Metal
Film
Resistor, and
Metal
Oxide
Film
Resistor.
Variable
Resistors include Adjustable resistors where the value can be changed by turning a knob.