Electricity And Circuits BOSEM Class 6 Science

Explore the BOSEM Class 6 Science Chapter on Electricity and Circuits. Learn the basics of electric circuits, current flow, and components like bulbs, switches, and batteries. Simplified explanations and key concepts to help you understand how electricity powers our world

• Chapter Name: Light Shadows and Reflections
• Subject:  Science
• Lesson: 12
• Class: 6
• Board: Board Of Secondary Education Manipur (BOSEM/BSEM) and CBSE
• Contents: Questions and Answers, Notes and Extra Questions

Solutions for Electricity And Circuits

Q1. Fill in the blanks

1. A device that is used to break electric circuits is called a Switch
2. An electric cell has two terminals.

Q2. Mark “True” or “False” for the following statements.

1. Electric current can flow through metals. (True)
2. Instead of metal wires, a jute string can be used to make a circuit. (False)
3. Electric current can pass through a sheet of thermocol. (False)

Q3. Explain why the bulb would not glow in the arrangement shown in the following figure 1.

Ans: In the given arrangement, an insulator breaks the flow of electric current so the circuit is not complete. So, the bulb would not glow

Q4. Complete the drawing shown in Figure 2, to indicate where the free ends of the two wires should be joined to make the bulb glow.

Ans: The given circuit is not complete. To complete the given circuit, the positive free terminals of the cell should be connected to one end of the switch and the other terminal of the bulb should be connected to the other end of the switch as shown in the following figure.

Q5. What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Ans: The purpose of using an electric switch is to complete or break an electric circuit.
Some electrical gadgets that have switches built into them are ovens, rice cookers, electric lamps, washing machines, fans, televisions, radios etc.

Q6. would the bulb glow after completing the circuit shown in Figure 2, if instead of a safety pin, we use an eraser?
Ans: If we complete the circuit given in Fig:2, using an eraser instead of a safety pin, then the bulb will not glow because the eraser is an insulator, and current cannot pass through it. Hence, it will break the circuit.

Q7. Would the bulb glow in the circuit shown in the figure?
Ans: No, the bulb would not glow in the given circuit because the two terminals of the cell are connected to the single terminal of the bulb.

Q8. Using the ‘conduction tester’ on an object, it was found that the bulb begins to glow. Is the object a conductor or an insulator? Explain.
Ans: Yes, the given object is a conductor. The bulb begins to glow, meaning electric current is passing through the object, which means the object is a conductor. If it is an insulator, the bulb would not glow.

Q9. Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Ans: The human body is a good conductor of electricity. Rubber is an insulator, so it does not allow the electric current to pass through it and will save the electrician from any electric shock while repairing an electric switch.

Q10. The handles of tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?
Ans: The handles of tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them because plastic and rubber are bad conductors of electricity, which do not allow electric current to pass through them. So they protect the electrician from any electric shock.

Extra Questions and Answers: Electricity And Circuits

Q1. What is filament?

Ans: It is the thin wire inside the electric bulb that lights when an electric current passes through it.

Q2. What are the uses of electricity?

Ans: Importance of electricity:

Q3. What is the direction of electric current in a circuit?

Ans: Electric current flows from the positive terminal to the negative terminal in an electric circuit.

Q4. Why does an electric cell stop producing electricity after some time?

Ans: An electric cell is a device capable of producing electricity from the chemicals stored inside it. When the chemicals in the electric cell are used up, the electric cell stops producing electricity.

Q5. Name some devices in which we use electric cells.

Ans: Wristwatches, Radio, Torchlight, Camera, etc.

Q6. What is an electric circuit?

Ans: An electric circuit is the pathway through which an electric current flows.

Q7. Why do electric cells and bulbs have two terminals?

Ans: Electric cells and bulbs have two terminals in order to allow the flow of electric current.

Q8. Define conductors and insulators. Give two examples of each.

Ans: Conductors are the materials that allow electric current to pass through them.
Example: Iron and Aluminum.

Insulators are materials that do not allow electric current to pass through them.
Example: Rubber and Glass.

Extra questions and answers 2: Electricity And Circuits

Q1. What is a circuit?

Ans: A circuit is a path that allows electric current to flow. It connects a power source, like a battery, to devices like bulbs or fans, allowing them to work.

Q2. Why do we need an electric cell in a circuit?

Ans: An electric cell provides the power needed for electricity to flow in a circuit. It is like a small battery that makes the bulb or other devices light up or work.

Q3. What is the role of a switch in a circuit?

Ans: A switch controls the flow of electricity in a circuit. It lets us turn the current on or off, which can turn a device like a bulb or fan on or off.

Q4. What happens if the circuit is not connected properly?

Ans: If a circuit is not connected properly, it is called an open circuit, and electric current cannot flow. This means that devices like bulbs or fans will not work.

Q5. Why is copper used to make electric wires?

Ans: Copper is used to make electric wires because it is a good conductor, meaning it allows electricity to pass through it easily.

Q6. What is a conductor? Give two examples.

Ans: A conductor is a material that lets electric current flow through it. Examples include copper and aluminium.

Q7. What is an insulator? Give two examples.

Ans: An insulator is a material that does not let electric current flow through it. Examples include rubber and plastic.

Q8. Why does an electric bulb have a thin wire inside it?

Ans: The thin wire inside an electric bulb is called the filament. It lights up when an electric current passes through it, producing light.

Q9. How does a battery work in a circuit?

Ans: A battery provides energy to the circuit. It has two ends (terminals) – positive and negative – which push electric current around the circuit.

Q10. What will happen if you use two electric cells in a circuit instead of one?

Ans: If you use two electric cells in a circuit, the bulb will glow brighter because there is more energy (voltage) pushing the electric current.