Page 179 - NCERT Science Class 10 English Medium

W = VQ

= 12 V × 2 C
= 24 J.

Q U E S T I O N S

1. Name a device that helps to maintain a potential difference across a
conductor.
2. What is meant by saying that the potential difference between two points ?
is 1 V?
3. How much energy is given to each coulomb of charge passing through a
6 V battery?

11.3 CIRCUIT DIAGRAMCIRCUIT DIAGRAM
11.3
CIRCUIT DIAGRAM
11.3
11.3 CIRCUIT
11.3 CIRCUIT DIAGRAM
DIAGRAM
We know that an electric circuit, as shown in Fig. 11.1, 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 11.1.

Table 11.1 Symbols of some commonly used components in circuit diagrams

Sl. Components Symbols
No.

1 An electric cell

2 A battery or a combination of cells

3 Plug key or switch (open)

4 Plug key or switch (closed)

5 A wire joint

6 Wires crossing without joining

174 Science

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