Class 6 Electricity and Circuits

Choose from the options a, b, c and d given in Fig. 12.1 the figure which shows the correct direction of current.

• 
• 
• 
• 

Choose the incorrect statement.

• A switch is the source of electric current in a circuit

• A switch help to complete or break the circuit.

• A switch helps us to use electricity as per our
  requirement

• When the switch is open there is an air gap between its
  terminals.

In an electric bulb, light is produced due to the glowing of

• the glass case of the bulb.

• the thin filament.

• the thick wires supporting the filament.

• gases inside glass case of the bulb.

In the following arrangement shown in Fig. 12.2, the bulb will not glow if the ends A and B are connected with

• A steel spoon

• A metal clip

• A plastic clip

• A copper wire

In the circuit shown in Fig. 12.3, when the switch is moved to ‘ON’ position,

• the bulb A will glow first

• the bulb B will glow first

• the bulb C will glow first.

• all bulbs will glow together.

Filament of a torch bulb is

• a metal case.

• metal tip at the centre of the base.

• two thick wires.

• a thin wire

Paheli is running short of connecting wires. To complete an electric circuit, she may use a

• glass bangle

• thick thread.

• rubber pipe.

• steel spoon.

In which of the following circuits A, B and C given in Fig. 12.4,
the cell will be used up very rapidly?

• 
• 
• 

Fig. 12.5 shows a bulb with its different parts marked as 1, 2, 3, 4 and 5. Which of them label the terminals of the bulb?

• 1 and 2

• 3 and 1

• 4 and 2

• 3 and 4

Will the bulb glow in the circuit shown in Fig. 12.6? Explain.

• Yes, it is open switch

• No, it is open switch

• Yes, it is closed switch

• No, it is closed switch