Testing Conduction of Electricity in Lemon Juice or Vinegar

Electric Current and Conductivity

• The anode (positive electrode) is connected to the positive terminal of the battery when producing oxygen bubbles in water.

Effects of Electric Current on Conducting Solutions

• When electrodes are immersed in water and a current is passed through, chemical reactions occur, such as the decomposition of water into oxygen and hydrogen.
• The chemical effects of electric current passing through a conducting solution include the formation of bubbles, changes in color, and changes in the state of the substance.

Experiment with Potato and Copper Wires

• When a potato is cut into two halves and copper wires of a tester are inserted into it, the potato acts as a conducting solution, allowing the electric current to pass through.
• The type of reaction that occurs when an electric current passes through a conducting solution is determined by the nature of the solution and the electrodes used.

Electric Current and Bulb

• When an electric current passes through the circuit, the bulb glows due to the filament getting heated.
• If the liquid is conducting but the bulb does not glow, it may be due to a weak current or a faulty bulb.
• A weak current in the circuit can occur even if the circuit is complete, possibly due to high resistance in the wires or a weak battery.

Magnetism and Electric Current

• When current flows in a wire, it creates a magnetic field, causing a compass needle kept nearby to deflect.

Safety Precautions with Electricity

• People are cautioned against touching an electrical appliance with wet hands because water is a good conductor of electricity and can increase the risk of electric shock.
• Good conductors of electricity include metals like copper and iron.
• Poor conductors of electricity include materials like wood, glass, and rubber.
• Materials were tested for conducting electricity in their dry state.
• It is advised to use only electric cells for activities involving testing conductivity to avoid any risks of electric shock.

Learn about testing the conduction of electricity in liquids like lemon juice or vinegar using a circuit tester. Understand how the circuit becomes complete when the current flows and the bulb glows, and what happens when the liquid does not conduct electricity.