Resistors

• 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.