Which type of electric circuit does not provide a path for the current to flow through it - closed circuit or open circuit?

Mention one similarity and one dissimilarity between electromotive force and potential difference. 

Write the conventional symbol of the following component used in electric circuit diagram-

Electric bulb

In the given circuit diagram, identify the objects marked as $1, 2, 3$.

Write the conventional symbol of the following component used in electric circuit diagram-

An electric cell

Write the conventional symbol of the following component used in electric circuit diagram-

A wire joint

Complete the word puzzle with the help of given clues.

ACROSS
1. Circuit through which current flows (13).
2. Device used for lifting heavy loads (13).
3. U-shaped soft iron piece used in electric bell (8)
4. Material used to make electromagnet (8).
5. Filament of an electric lamp (8) DOWN
6. A combination of two or more cells (7).
7. A safety device in electrical circuits against high currents (4).
8. An electric appliance based on heating effect of current (6).

A diagram showing the arrangement of the various components of an electric circuit with the help of their symbols. (circuit diagram / block diagram)

A diagram of an electric circuit described by using symbols of the components used in it is called a _____ diagram.

How does an electric current flow in a closed circuit? Explain.

MATCH THE COLUMNS:

	Column A		Column B
1.	Open circuit	A.	Electric fuse
2.	Copper	B.	No flow of current
3.	Nichrome wire	C.	Heavy loads
4.	Electromagnet	D.	Heating coil
5.		E	Good conductor