Question

.A student makes an electric circuit using an LED, a battery and connecting wires.The student notices that the LED does not glow. He replaces the distilled water with a salt solution and observes that the LED glows. How does the salt solution help the LED to glow?
(1 Point)
(a) Salt solution is covalent in nature and conducts electricity.
(b) Salt solution has a low melting point which allows the current to flow through it.
(c) Salt solution has a high boiling point which allows the flow of current in the circuit
without getting hot.
(d) Salt solution contain ions which makes it conductive and allows the electricity to flow
through it.

Answer 1

Answer:

ans is salt solution ions which make it conductive and allow the electric to flow from it.

Answer 2

(d) Salt solution comprises ions which makes it conductive and allows the power to flow through it is the correct option.

(d) Salt solution comprises ions which makes it conductive and allows the power to flow through it is the correct option.Explanation:

• The salt solution permits the LED to glow due to the fact salt solution contains ions, which makes it conductive and allows the power to flow through it.
• The ions are known for his or her conducting property in liquid or aqueous solutions, as they will be loose to move with inside the solution.
• Distilled water does now not comprise salts in it and hence, there are no ions.
• The salt contains sodium and chloride ions that freely go with the drift at a few degrees in the answer.
• They help in undertaking power via transferring to opposite ends of the electrode.

Hence, the LED glows even as distilled water is modified with salt water.

#SPJ3