امتحان

--------stay longer than the o r dinary electric bulbs

1

both

2

Fluo r escent lamp

3

Combined fluo r esces lamp

تصحيح

---------------is the type of the base of light bulb which has two pieces of lead

1

spiral base

2

circular base

3

two side nails base

تصحيح

Electric circuit consists of ---------------------

1

Lamp

2

Better

3

Electric wires

4

All the above

تصحيح

--------indicate the passage of electric current

1

Electric wire

2

Lamp

3

Battery

تصحيح

Deco r ative lamps are connected-----------------------

1

In parallel connection

2

Both

3

In series connection

تصحيح

Electric circuit is------------------

1

Disintegrated path through witch electric current passes

2

Closed path through witch electric current passes

3

Open path through witch electric current passes

تصحيح

Electric circuit is------------------

1

Disintegrated path through witch electric current passes

2

Closed path through witch electric current passes

3

Open path through witch electric current passes

تصحيح

The fluo r escent lamp known as-----------------------lamp

1

Nitrogen

2

Argon

3

Neon

تصحيح

--------is the way in which the light bulbs are connected one after another in one route

1

Parallel connection

2

Series connection

3

Both

تصحيح

the properties of electric lamps is-----------

1

associated with vapo r

2

have special o r der

3

free fr om smoke

تصحيح

العلوم الصف السادس الابتدائى الترم الثانى