EASY
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Identify the symbol of the fuse from the following.

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Important Questions on Electricity: Current and Its Effect

MEDIUM
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Distinguish between an open and a closed circuit using circuit diagrams.
MEDIUM
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components

In the circuit diagram shown below:

Question Image

Would any of the bulbs glow when the switch is in the ‘off position?
 

EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components

Name the materials used for making:

(a) filament of an electric bulb

EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Give the electrical symbols for:

(a) switch in 'ON' position (b) wire.

EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Draw the electrical symbols for
(a) a bulb (or lamp)
(b) an open switch, and
(c) a closed switch. 
 
MEDIUM
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Why do not tube lights (or fluorescent tubes) generate heat?
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
The electric circuit that is not complete is called _____ circuit.
MEDIUM
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
What are the symbols used in a circuit diagram to represent a bulb, a switch on, a switch off and a battery.   
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Give the names and symbols for any two common electrical components. 
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components

Define the following:

Filament

EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Which of the following are symbols of circuit elements?
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Name the device which is used to ‘make’ or ‘break’ an electric circuit. 
MEDIUM
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Draw the symbols for the circuit elements such as a single electric cell, an electric bulb, battery, open switch and closed switch.  
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
The switch in the 'ON' position shows an open circuit.
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Give the electrical symbols for electric bulb.
MEDIUM
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
When electric current is passed through the filament of a bulb, it gives off:
A. Sound
B. Heat
C. Magnetism
D. Light
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Name the material used in making a filament of bulb?
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components

Match the following:

  Column A   Column B
1 Tungsten A High resistance
2 Nichrome wire B Bulb
3 Soft iron C Low resistance
4 Mica D Electric iron
5 Copper E Electromagnet

 

EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Of what material is the filament of the electric bulb made?
EASY
Science>Physics>Electricity: Current and Its Effect>Symbols of Electronic Components
Which gas is filled in the electric bulb and why?