12 v dc current experiment with salt water

Use a 12V DC circuit to light up a light bulb with salt water.

Materials:

12V DC power supply
Light bulb
Two electrodes (e.g., Popsicle sticks wrapped in aluminum foil)
Wires
Salt water
Instructions:

Connect the positive terminal of the power supply to one electrode and the negative terminal to the other electrode.
Connect the light bulb to the electrodes.
Pour salt water into a cup or beaker.
Submerge the electrodes in the salt water, making sure they do not touch each other.
The light bulb should light up!
Explanation:

Salt water conducts electricity because it contains dissolved ions. These ions are free to move around in the water and carry an electrical current. When the electrodes are submerged in the salt water, the ions create a pathway for electricity to flow from one electrode to the other, which lights up the light bulb.

Variations:

Try adding more salt to the water to see if the light bulb lights up brighter.
Try using a different type of salt, such as Epsom salt or baking soda.
Try using a different type of light bulb, such as an LED bulb or a buzzer.
Safety:

Be careful not to touch the electrodes while they are submerged in the salt water, as this could cause a shock.
Supervise children closely when performing this experiment.

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