Question: What is the direction of flow of current in a dry cell?
Answer: The current flows in closed circuit from +ve to -ve terminal of cell.
Question: Name the +ve terminal of dry cell.
Answer: Carbon rod with a metal cap on it.
Question: Name the -ve terminal of a dry cell.
Answer: Zinc metal plate.
Question: What is dry cell?
Answer: It is a device which converts chemical energy into electrical energy.
Question: What is solar cell?
Answer: A device which converts solar energy into electrical energy.
Question: What is open circuit?
Answer: An electric circuit in which electrical contact at any point is broken is called open circuit.
Question: Write one use of insulators.
Answer: Insulators are used in making switchboard, handles of testers, screw drivers.
Question: What is the name of thin wire in the electric bulb?
Question: Mention two advantages of a dry cell.
- It converts chemical energy into electrical energy.
- It is light and small in size.
Question: Define conductors and insulators. Give one example of each.
- A conductor is that which easily allows the passage of current through it. Example: Aluminium or any metal.
- An insulator is that which does not allow the passage of current through it. Example: Rubber.