11.3 CIRCUIT DIAGRAM

. CIRCUIT DIAGRAM We know that an electric circuit, as shown in Fig. . , comprises a cell (or a battery), a plug key, electrical component(s), and connecting wires. It is often convenient to draw a schematic diagram, in which different components of the circuit are represented by the symbols conveniently used. Conventional symbols used to represent some of the most commonly used electrical components are given in Table . . Table . Symbols of some commonly used components in circuit diagrams Sl. Components Symbols No. An electric cell A battery or a combination of cells Plug key or switch (open) Plug key or switch (closed) A wire joint Wires crossing without joining . Name a device that helps to maintain a potential difference across a conductor. . What is meant by saying that the potential difference between two points is V? . How much energy is given to each coulomb of charge passing through a V battery?