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# Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 chapter 10 - Electricity and Magnetism – 1 [Latest edition]

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## Chapter 10: Electricity and Magnetism – 1

Unit I Exercise 1Unit I Practice Problems 1Unit I Practice Problems 2Unit I Practice Problems 3Unit I Practice Problems 4Unit I Practice Problems 5Unit II Exercise 2 (A) Objective QuestionsUnit II Exercise 2 (B) Subjective Questions
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Unit I Exercise 1

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit I Exercise 1

Unit I Exercise 1 | Q 1.1

There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.

Which sphere is at higher potential before electrical contact on the basis of convention?

Unit I Exercise 1 | Q 1.2

There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.

Which sphere is at lower potential before electrical contact on the basis of convention?

Unit I Exercise 1 | Q 1.3

There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.

In which direction conventional current flows?

Unit I Exercise 1 | Q 1.4

There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.

In which direction electronic current flows?

Unit I Exercise 1 | Q 1.5

There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.

What is the potential of the spheres after electrical contact?

Unit I Exercise 1 | Q 2.1

What do you understand by the term electric potential?

Unit I Exercise 1 | Q 2.2

Define electric potential in terms of energy spent.

Unit I Exercise 1 | Q 2.3

State the unit of electric potential and define it.

Unit I Exercise 1 | Q 3.1

What do you understand by the term quantity of electric charge?

Unit I Exercise 1 | Q 3.2

State SI unit of electric charge and define it.

Unit I Exercise 1 | Q 3.3

How many electrons constitute one unit electric charge in SI system?

Unit I Exercise 1 | Q 4.1

What do you understand by the term electric current?

Unit I Exercise 1 | Q 4.2

State and define the SI unit of electric current.

Unit I Exercise 1 | Q 4.3

State the relation between electric current; the number of electrons moving in a circuit and time in seconds.

Unit I Exercise 1 | Q 5.1

How electric current flows in solids?

Unit I Exercise 1 | Q 5.2

How electric current flows in liquids?

Unit I Exercise 1 | Q 6.1

Define the term potential difference?

Unit I Exercise 1 | Q 6.2

How is potential difference related to work done and quantity of charge?

Unit I Practice Problems 1

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit I Practice Problems 1

Unit I Practice Problems 1 | Q 1

A charge of 5000 C flows through an electric circuit in 2 hours and 30 minutes. Calculate the magnitude of current in a circuit.

Unit I Practice Problems 1 | Q 2

A charge of 8860 C flows through an electric circuit in 2 min and 40 s. Calculate the magnitude of current in a circuit.

Unit I Practice Problems 2

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit I Practice Problems 2

Unit I Practice Problems 2 | Q 1

A battery can supply a charge of 25 × 104 C. If the current is drawn from battery at the rate of 2.5 A, calculate the time in which battery will discharge completely.

Unit I Practice Problems 2 | Q 2

A dry cell can supply a charge of 800 C. If continuous current of 8.0 mA is drawn, calculate the time in which cells will discharge completely.

Unit I Practice Problems 3

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit I Practice Problems 3

Unit I Practice Problems 3 | Q 1

Calculate the total number of electrons flowing through a circuit in 20 mins and 40 s, if a current of 40 μA flows through the circuit.
[1 e = 1.6 × 10-19 C]

Unit I Practice Problems 3 | Q 2

4 × 1020 electrons flow through a circuit in 10 hours. Calculate magnitude of current. [1 e- = 1.6 × 10-19 C]

Unit I Practice Problems 4

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit I Practice Problems 4

Unit I Practice Problems 4 | Q 1

What is the electrical potential at a point in an electric field when 24 J of work is done in moving a charge of 96 C from infinity?

Unit I Practice Problems 4 | Q 2

A charge of 75 C is brought from infinity to a given point in an electric field, when amount of work done is 3.75 J. Calculate the electrical potential at that point.

Unit I Practice Problems 5

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit I Practice Problems 5

Unit I Practice Problems 5 | Q 1

A work of 25 J and 30 J is done when 5 C charge is moved first to point A and then to point B from infinity. Calculate the potential difference between points A and B.

Unit I Practice Problems 5 | Q 2

A charge of 25 C is moved from infinity to points A and B in an electric field when the work is done to do so is 10 J and 10.5 J respectively. Calculate the potential difference between points A and B.

Unit II Exercise 2 (A) Objective Questions

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit II Exercise 2 (A) Objective Questions

Unit II Exercise 2 (A) Objective Questions | Q 1

Select the correct option:

SI unit potential difference is:

• coulomb

• kelvin

• volt

• ampere

Unit II Exercise 2 (A) Objective Questions | Q 2

Select the correct option:

Current in a circuit flows:

• in a direction from high potential to low potential

• in a direction from low potential to high potential

• in a direction of flow of electron

• in any direction

Unit II Exercise 2 (A) Objective Questions | Q 3

Select the correct option:

In a metallic conductor, electric current is thought to be due to movement of:

• ions

• amperes

• electrons

• protons

Unit II Exercise 2 (A) Objective Questions | Q 4

Assuming that the charges of an electron is 1.6 × 10-19 coulombs, the number of electrons passing through a section of wire per sec, when the wire carries a current of one ampere is:

• 0.625 × 1019

• 1.6 × 10-19

• 1.6 × 1019

• 0.627 × 10-17

Unit II Exercise 2 (A) Objective Questions | Q 5

Select the correct option:

Which of the following is the best conductor of electricity?

• copper

• gold

• platinum

• silver

Unit II Exercise 2 (B) Subjective Questions

### Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 Chapter 10 Electricity and Magnetism – 1Unit II Exercise 2 (B) Subjective Questions

Unit II Exercise 2 (B) Subjective Questions | Q 1

What do you understand by the term electric cell?

Unit II Exercise 2 (B) Subjective Questions | Q 2

Draw a neat and labelled diagram of a simple voltaic cell showing clearly the direction of flow of conventional current and direction of flow of electrons.

Unit II Exercise 2 (B) Subjective Questions | Q 3

Briefly describe the theory of simple voltaic cell.

Unit II Exercise 2 (B) Subjective Questions | Q 4.1
What do you understand by an electric circuit?
Unit II Exercise 2 (B) Subjective Questions | Q 4.2

What do you understand by the closed electric circuit

Unit II Exercise 2 (B) Subjective Questions | Q 4.3

What do you understand by the open electric circuit?

Unit II Exercise 2 (B) Subjective Questions | Q 5

State two conditions necessary for a circuit, such that electric current flows through it.

Unit II Exercise 2 (B) Subjective Questions | Q 6.1

Draw a neat diagram showing a closed electric circuit.

Unit II Exercise 2 (B) Subjective Questions | Q 6.2

Draw a neat diagram showing a open electric circuit.

Unit II Exercise 2 (B) Subjective Questions | Q 7

Name four electric conductors and four electric insulators.

Unit II Exercise 2 (B) Subjective Questions | Q 8.1

What do you understand by the term electric resistance?

Unit II Exercise 2 (B) Subjective Questions | Q 8.2

Why does the filament of an electric bulb in an electric circuit get white-hot, but not the connecting wires?

Unit II Exercise 2 (B) Subjective Questions | Q 9

Is it correct to say that a resistance wire is an insulator or a bad conductor? Explain your answer.

Unit II Exercise 2 (B) Subjective Questions | Q 10.1

What do you understand by the term series circuit?

Unit II Exercise 2 (B) Subjective Questions | Q 10.2

State two characteristics of resistances in the series circuit.

Unit II Exercise 2 (B) Subjective Questions | Q 10.3

Draw a diagram showing two bulbs connected in series to a dry cell.

Unit II Exercise 2 (B) Subjective Questions | Q 11.1

What do you understand by the term parallel circuit?

Unit II Exercise 2 (B) Subjective Questions | Q 11.2

State two characteristics of resistance in the parallel circuit.

Unit II Exercise 2 (B) Subjective Questions | Q 11.3

Draw a diagram showing two bulbs connected in parallel to a dry cell.

## Chapter 10: Electricity and Magnetism – 1

Unit I Exercise 1Unit I Practice Problems 1Unit I Practice Problems 2Unit I Practice Problems 3Unit I Practice Problems 4Unit I Practice Problems 5Unit II Exercise 2 (A) Objective QuestionsUnit II Exercise 2 (B) Subjective Questions ## Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 chapter 10 - Electricity and Magnetism – 1

Goyal Brothers Prakashan solutions for Class 9 A New Approach to ICSE Physics Part 1 chapter 10 (Electricity and Magnetism – 1) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Class 9 A New Approach to ICSE Physics Part 1 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Goyal Brothers Prakashan textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 9 A New Approach to ICSE Physics Part 1 chapter 10 Electricity and Magnetism – 1 are Simple Electric Circuit Using an Electric Cell and a Bulb to Introduce the Idea of Current, Closed and Open Circuits, Direction of the Electric Current - Conventional and Electronic Flow, Social Initiatives - Improving Efficiency of Existing Technologies and Introducing New Eco-friendly Technologies. Creating Awareness and Building Trends of Sensitive Use of Resources and Products, Induced Magnetism, Neutral Points in Magnetic Fields, Uses of Electromagnet, Magnetic Field Lines, Electrical Energy and Power, Magnet and Its Characteristics, Magnetic and Non-magnetic Materials, Earth’s Magnetism, Conductors and Insulators.

Using Goyal Brothers Prakashan Class 9 solutions Electricity and Magnetism – 1 exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Goyal Brothers Prakashan Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 9 prefer Goyal Brothers Prakashan Textbook Solutions to score more in exam.

Get the free view of chapter 10 Electricity and Magnetism – 1 Class 9 extra questions for Class 9 A New Approach to ICSE Physics Part 1 and can use Shaalaa.com to keep it handy for your exam preparation

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