Question: What is electric current?
Answer: The flow of electrons constitutes an electric current.
Question: How is electronic current different from conventional current?
Answer: The flow of electronic current is from negative to positive whereas the flow of conventional current is from positive to negative.
Question: Differentiate between conductors and insulators.
Answer: Difference is as follows:
Question: What is an electrolyte?
Answer: A substance which conducts electricity in the liquid state or when dissolved in water and breaks up chemically during the process is called an electrolyte.
Question: Why is zinc electroplated on iron?
Answer: Zinc is electroplated on iron to prevent it from rusting.
Question: Draw a circuit diagram showing a dry cell connected to a bulb through a switch. Mark the positive and the negative terminals of the cell, and the direction of flow of a. electron, b. conventional current.
Question: What are the advantages of electroplating iron with chromium?
Answer: Chromium is a shiny metal that does not corrode and resists scratches. It makes iron look more attractive and also resist corrosion.