Resistors

Cards (13)

  • 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.