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c circuit. When the switch is open, then the circuit breaks' and no cu, e 12(1)]., uit Diagrams, cicar circuits are represented by drawing circuit diagrams. A diagram which indicates now different, Ponents in a circuit have been connected by using the electrical symbols for the components, is, da circuit diagram. An electric circuit consisting of a cell, a bulb and a, closed switch which was, It in Figure 11(a) can be represented by drawing a circuit diagram shown in Figure 15(4). In the circuit, am shown in Figure 13(a), a bulb has been connected to the two terminals of a cell by copper wires, agh a closed switch., Sh, (a) This is the circuit diagram of the circuit shown, in Figure 11(a)., (b) This is the circuit diagram of the circuit given, in Figure 11(b)., Figure 13. Circuit diagrams drawn by using the electrical symbols of the various components., Voltmeter connected, in parallel with, the resistor, The electric circuit consisting of a cell, a bulb and an open switch, ch was drawn in Figure 11(b) can be represented by drawing a circuit, gram shown in Figure 13(b). In the circuit diagram shown in Figure, ), a bulb has been connected to the two terminals of the cell by, Ammeter in, series with the, circuit, per wires through an open switch., The circuit shown in Figure 13(a) is complete (due to closed switch)., ce there is no gap, therefore, current flows in this circuit and the, o In this case, the electrons can move through the external, Resistor, lights up., it. These moving electrons form an electric current. The circuit given, gure 13(b) is broken (due to a gap because of open switch), so no, ent flows in this circuit and bulb goes off. The electrons cannot flow, is circuit due to the gap produced by the open switch., (•)→, Switch, Connecting Cell, wires, Another, nother simple electric circuit has been shown in Figure 14. In this Figure 14. An electric circuit consisting, it, a resistor R has been connected to the two terminals of a cell, of a cell, a resistor, an ammeter, a, voltmeter and a switch (or plug key).