1) The function of a resistor in a circuit is to resist the flow of electric current. It is designed to provide a specific amount of resistance to the flow of electrons, which in turn regulates the current in the circuit. Resistors are used to control current levels, limit current flow, divide voltage, and protect sensitive components from excessive current.
2) An example of a resistor is a carbon composition resistor. It is a common type of fixed resistor that consists of a cylindrical carbon core with wire leads attached to each end. The resistance value of carbon composition resistors can range from a few ohms to several megaohms.
3) In this representation, the labeled parts of the light bulb are as follows:
Filament: The thin wire inside the bulb that emits light when heated by an electric current.
Glass Envelope: The transparent or translucent outer covering of the bulb, typically made of glass, which contains the filament and protects it from the surrounding environment.
Base: The bottom part of the light bulb that provides support and houses the electrical connections.
Electrical Contacts: The metal contacts or terminals on the base that allow the bulb to be connected to an electrical circuit.
_______
/ \
/ \
| Filament |
| |
| |
| ___ |
| / \ |
\ | | /
\ | | /
\ | |/
\ | |
\|_____|
1. Filament
2. Glass Envelope
3. Base
4. Electrical Contacts
Please note that this is a simplified representation, and there may be additional components or variations depending on the specific type of light bulb. (See Attachment)