SEBA Class 7 Science Important Chapter 2 Electricity Electrical Circuit and Their Components

SEBA Class 7 Science Important Chapter 2 Electricity Electrical Circuit and Their Components Solutions English Medium As Per SCERT New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 7 Science Important Chapter 2 Electricity Electrical Circuit and Their Components Notes and select need one. SEBA Class 7 Science Important Notes in English Download PDF. SCERT Class 7 Science (Amar Bijnan) Additional Solutions in English.

SEBA Class 7 Science Important Chapter 2 Electricity Electrical Circuit and Their Components

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. SCERT Class 7 Science (Amar Bijnan) Extra Solutions in English are part of All Subject Solutions. Here we have given SCERT Class 7 Science Additional Notes in English for All Chapters, You can practice these here.

Electricity Electrical Circuit and Their Components

Chapter: 2

PART – I

IMPORTANT QUESTION ANSWER

Short Type Question & Answers:

1. What is an electric cell? 

Ans: An electric cell is a source of electricity that produces electrical energy from the chemicals stored inside it.

2. Name the two terminals of an electric cell. 

Ans: The two terminals are the positive terminal (represented by a metal cap) and the negative terminal (represented by a metal cover).

3. What is a battery? 

Ans: A battery is a connection of two or more electric cells where the positive terminal of one cell is connected to the negative terminal of the next.

4. What is the filament of a lamp? 

Ans: The filament is a thin wire inside the glass bulb that gets heated and emits light when electricity passes through it.

5. Which material is most suitable for making filaments? 

Ans: Tungsten is considered the best material for filaments because it is flexible and has the highest melting point among all elements.

6. What does LED stand for? 

Ans: LED stands for Light Emitting Diode.

7. In which direction does current flow in a closed circuit? 

Ans: In a closed circuit, electric current flows from the positive terminal of the electric cell to the negative terminal.

8. What is an electric switch? 

Ans: A switch is a simple electrical device used to break or complete an electric circuit.

9. Define electrical conductors. 

Ans: Substances that easily allow electricity to flow through them, such as metals, are called electrical conductors.

10. What are electrical insulators? 

Ans: Substances that do not allow electricity to flow through them, such as rubber or plastic, are called insulators.

Fill in the Blanks:

1. The metal cap in an electric cell is the _________ terminal.

Ans: Positive.

2. A ___________ is the term used for a combination of two or more cells.

Ans: Battery.

3. In the symbol of an electric cell, the _____________ represents the positive terminal.

Ans: Long Line.

4. Our body is a conductor of electricity.

Ans: Conductor.

5. The representation of an electrical circuit using symbols is called a _____________.

Ans: Circuit diagram.

True or False:

1. Electric current can pass through an LED in both directions. 

Ans: False – it only flows in one direction.

2. Insulators allow electric current to pass through them. 

Ans: False – they do not allow flow.

3. Thomas Alva Edison is credited with the invention of the electric bulb. 

Ans: True.