Question

To show that metals conduct electricity
Set up a simple electric circuit with the help of an electric
cell, bulb and some materials like a key or iron rod, a copper
wire, a metal weight, a piece of coal, a rubber, etc., as shown
in the figure given alongside.
Now observe in which case the bulb glows.
The bulb glows when the connecting wires are attached to
metallic key, copper wire and iron rod, whereas it does not
glow when the wires are connected to coal or rubber.
Write your observations:-
nubbar
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Answer 1

Answer:

The bulb glows when it gets electricity because it's filament gets heated.It turns on when the thing kept is electric conductor.metallic key, copper wire and iron rod are electric conductor.coal and rubber are not electric conductor

Answer 2

Answer:

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Explanation:

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