Class 6 Science Chapter 9 Important Question Answers - Electricity and Circuits

Very Short Answer Type Questions

Q1: What is the function of an electric cell?
Ans: An electric cell generates electric current through chemical reactions.

Q2: What are the two terminals of an electric cell called?
Ans: The two terminals of an electric cell are the positive terminal and the negative terminal.

Q3: What is the purpose of the filament in a bulb?
Ans: The filament in a bulb is responsible for producing light when an electric current passes through it.

Q4: What is the direction of electric current in an electric circuit?
Ans: The direction of electric current in an electric circuit is from the positive terminal to the negative terminal.

Q5: What happens when an electric switch is in the closed position?
Ans: When an electric switch is in the closed position, it completes the circuit, allowing the flow of electric current.

Q6: What is a fused bulb?
Ans: A fused bulb is a bulb with a broken filament, causing it to stop working.

Q7: Name one common conductor of electricity.
Ans: Copper is a common conductor of electricity.

Q8: Give an example of an insulator.
Ans: Glass is an example of an insulator.

Q9: Why is an electric switch important in an electric circuit?
Ans: An electric switch is important because it can stop or start the flow of electric current in a circuit.

Q10: What material is commonly used for making electric wires?
Ans: Copper is commonly used for making electric wires.

Short Answer Type Questions

Q11: Explain the function of the positive and negative terminals in an electric cell.
Ans: The positive terminal of an electric cell is where electrons flow out, while the negative terminal is where electrons flow in. This flow of electrons generates electric current.

Q12: Describe the structure of a bulb and explain how it produces light.
Ans: A bulb consists of a filament, supported by two thick wires, inside a glass cover filled with inert gases. When an electric current passes through the filament, it gets hot and emits light.

Q13: What is the role of an electric switch in an electric circuit? Provide examples of different types of switches.
Ans: An electric switch is used to either complete or break an electric circuit, controlling the flow of electric current. Examples include toggle switches, push-button switches, and joystick switches.

Q14: Differentiate between conductors and insulators, and provide examples of each.
Ans: Conductors allow electric current to pass through, e.g., copper. Insulators do not allow electric current to pass through, e.g., glass.

Q15: Explain why it is important to have insulating materials in electrical appliances.
Ans: Insulating materials in electrical appliances prevent electric shocks and protect users from the dangers of electricity. They keep conductive parts insulated from contact.

Long Answer Type Questions

Q16: Describe the functioning of an electric cell and how it provides electricity to devices.
Ans: An electric cell generates electricity through chemical reactions between its positive and negative terminals, which are separated by an electrolyte. When connected to a device, electrons flow from the negative to the positive terminal, providing electrical energy.

Q17: Explain the concept of an electric circuit, including the direction of electric current.
Ans: An electric circuit is a closed path through which electric current flows. Electric current flows from the positive terminal to the negative terminal. It is essential for devices to function.

Q18: Discuss the structure of a bulb and how it produces light when connected to an electric cell.
Ans: A bulb contains a filament, which, when heated by an electric current, emits light. The filament is supported by wires inside a glass cover filled with inert gases. When connected to an electric cell, the filament glows, producing light.

Q19: Provide examples of different types of switches and explain their functions in controlling electric circuits.
Ans: Toggle switches, push-button switches, and joystick switches are examples of switches. They control the flow of electric current in circuits by either completing or breaking the circuit.

Q20: Explain the importance of conductors and insulators in electrical systems and provide examples of their applications.
Ans: Conductors are essential for transmitting electric current efficiently, e.g., copper wires. Insulators are crucial for safety, preventing electric shocks, and insulating conductive parts from contact, e.g., plastic covering on plugs and switches.