Exam Science The Electric Lamps Junior6

(Choose) ….. are from the artificial sources that are used before inventing the electric lamps.

The electric lamps represent a constant source of light that is ……..(Choose)

The electric lamp converts the electric energy into(Choose)………. energy

All the following are from the components of the light bulb except ………..(Choose)

The filament of the light bulb is made of…………..(Choose)

The filament of the light bulb is made of tungsten because it has …………(Choose)

(Choose) ……… allow the electric current to transfer from the lamp base to the filament.

All the following are from the components of the fluorescent lamp except…………(Choose)

Which of the following gases is found in the fluorescent lamp but not in the light bulb? ……….. (Choose)

The glass tube of the fluorescent lamp contains ……….. (Choose)

The inner surface of the tube of the fluorescent lamp is covered with……….(Choose)

There are two points of connection at each tip of the fluorescent lamp………….(Choose)

When the electric lamp connected in parallel with others in the electric circuit, the light intensity………..(Choose)

All the following gases are used in the electric lamps except …….. (Choose)

We need a light bulb, battery and connecting wires connected together in a closed continuous path to ………. (Choose)

When we connect more than one bulb in series to an electric source, the light intensity of the bulbs…………(Choose)

When we connect more than one bulb in parallel to an electric source, the light intensity of the bulbs ……… (Choose)

If we have three light bulbs and we need to get high light intensity, so we must connect them………(choose)

When we unscrew a bulb from those that are connected in series …….. (Choose)

When an electric lamp which is connected in series with the other lamps burns out………(Choose)

In houses, ……….

The light bulbs are connected in (choose)………. the house.

In the decorative lights, if one or more lamps burn out the other lamps do not turn off, because………… (choose)