The power switch is a rocker switch and it has two symbols on the face: “O” and “—“. They are the International symbols for power “On” and power “Off”. “O” means the power is OFF and “–“means the power is ON. To turn the power washer ON, press the “—“down on the power switch.

Answer. Thermoplastic materials soften under high temperatures and harden when cooled. Since electric current produces high temperatures, these materials would soften and on cooling, would not recover introductory shape or outline. This would cause defects in their functioning.

A router receives and sends data on computer networks. Routers are sometimes confused with network hubs, modems, or network switches. However, routers can combine the functions of these components, and connect with these devices, to improve Internet access or help create business networks.

Electrical symbols are a graphical representation of basic electrical and electronic devices or components. These Symbols are used in circuit and electrical diagrams to recognize a component. It is also called a schematic symbol.

The buzzer consists of an outside case with two pins to attach it to power and ground. When current is applied to the buzzer it causes the ceramic disk to contract or expand. Changing the This then causes the surrounding disc to vibrate. That’s the sound that you hear.

There are two circuit symbols for a lamp, one for a lamp used to provide illumination and another for a lamp used as an indicator. Small lamps such as torch bulbs can be used for both purposes so either circuit symbol may used in simple educational circuits.

Ammeters are typically represented by a circle with a letter A inside (Figure 1). Figure 1. Symbol for ammeter. Voltmeters are typically represented by a circle with a letter V inside (Figure 2).

electric potential difference