Answer the questions given below.
Explain how the conductivity of materials determines whether a bulb glows in a simple circuit. Classify materials into conductors and insulators with examples.
In a , a bulb glows only when flows through the circuit. The ability of a material to allow electric current to pass through it depends on its electrical properties.
Materials that allow electric current to pass through them easily are called . When a conductor (such as a metal spoon or copper wire) is placed in the circuit, it completes the circuit, allowing current to flow and the bulb to glow.
On the other hand, materials that do not allow electric current to pass through them are called . When an insulator (such as rubber or plastic) is placed in the circuit, it breaks the circuit, preventing the , so the bulb does not glow.
Thus, by observing whether the bulb glows or not, we can classify materials into:
Conductors (e.g - )
Insulators (e.g - )