Difference between Inductor and resistor

Inductor and resistor are two different passive electronic components with distinct properties and functions.

Resistor

1. Function: Resistors are used to limit the flow of electric current in a circuit. They introduce resistance to the flow of electrons, thereby controlling the amount of current passing through them.
2. Unit: The unit of resistance is the ohm (Ω).
3. Symbol: The symbol for a resistor is a zigzag line.
4. Effect on Voltage: Resistors do not change the phase relationship between voltage and current. Voltage and current are always in phase across a resistor.
5. Energy Dissipation: Resistors dissipate electrical energy in the form of heat. This property is used in various applications, such as voltage dividers and current limiting.

Inductor

1. Function: Inductors are used to store energy in the form of a magnetic field. When current flows through an inductor, it induces a magnetic field around it. This magnetic field stores energy, which is released when the current changes.
2. Unit: The unit of inductance is the henry (H).
3. Symbol: The symbol for an inductor consists of a coil or loops of wire.
4. Effect on Voltage: Inductors introduce a phase difference between voltage and current. When the current changes, the inductor resists the change by inducing a voltage in the opposite direction (back EMF), which can lead to a phase shift.
5. Energy Storage: Inductors store energy in their magnetic field and release it when the current changes. This property is utilized in applications like transformers and filters.