Question

Q no.2 The materials which allow electricity to pass through them are called good conductors of electricity
and materials which do not allow electric current to pass through them are called poor conductors of
electricity.Electric current can also pass through liquids and to test whether a liquid allows electric current
to pass through it or not, we pass electric current through the liquid to complete an electric circuit. To check
the conductivity of the liquids a bulb or an LED or compass in the circuit is used
(a)
Why some liquids can be tested for conductivity by LED and not by bulb.
a​

Answer 1

Answer:

Because some liquids are conductors of electricity but they conduct very weakly. Bulb needs high amount of current but LED needs only little. So the weakly conducting liquids can be tested by using LED

Answer 2

electric conductor is the correct