# NCERT solutions for Class 10 Science chapter 13 - Magnetic Effects of Electric Current [Latest edition]

## Solutions for Chapter 13: Magnetic Effects of Electric Current

Below listed, you can find solutions for Chapter 13 of CBSE NCERT for Class 10 Science.

Intext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsExercises
Intext Questions [Page 224]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Page 224]

Intext Questions | Q 1 | Page 224

Why does a compass needle get deflected when brought near a bar magnet?

Intext Questions [Page 228]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Page 228]

Intext Questions | Q 1 | Page 228

Draw magnetic field lines around a bar magnet.

Intext Questions | Q 2 | Page 228

Write any three properties of magnetic lines of force.

Intext Questions | Q 3 | Page 228

Why don’t two magnetic lines of force intersect each other?

Intext Questions [Pages 229 - 230]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Pages 229 - 230]

Intext Questions | Q 1 | Page 229

Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop

Intext Questions | Q 2 | Page 229

The magnetic field in a given region is uniform. Draw a diagram to represent it.

Intext Questions | Q 3 | Page 230

The magnetic field inside a long straight solenoid-carrying current

• is zero

• decreases as we move towards its end

• increases as we move towards its end

• is the same at all points

Intext Questions [Pages 231 - 232]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Pages 231 - 232]

Intext Questions | Q 1 | Page 231

Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)
(a) mass
(b) speed
(c) velocity
(d) momentum

Intext Questions | Q 2 | Page 232

In the Activity shown below, how do we think the displacement of rod AB will be affected if (i) current in rod AB is increased; (ii) a stronger horse-shoe magnet is used; and (iii) length of the rod AB is increased?

 Take a small aluminium rod AB (of about 5 cm). Using two connecting wires suspend it horizontally from a stand, as shown in Fig. Place a strong horse-shoe magnet in such a way that the rod lies between the two poles with the magnetic field directed upwards. For this put the north pole of the magnet vertically below and south pole vertically above the aluminium rod (Fig.). Connect the aluminium rod in series with a battery, a key and a rheostat. Now pass a current through the aluminium rod from end B to end A. What do you observe? It is observed that the rod is displaced towards the left. You will notice that the rod gets displaced. Reverse the direction of current flowing through the rod and observe the direction of its displacement. It is now towards the right. Why does the rod get displaced? A current-carrying rod, AB, experiences a force perpendicular to its length and the magnetic field. Support for the magnet is not shown here, for simplicity.
Intext Questions | Q 3 | Page 232

A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is

• towards south

• towards east

• downward

• upward

Intext Questions [Page 233]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Page 233]

Intext Questions | Q 1 | Page 233

State Fleming’s left-hand rule.

Intext Questions | Q 2 | Page 233

What is the principle of an electric motor?

Intext Questions | Q 3 | Page 233

What is the role of the split ring in an electric motor?

Intext Questions [Page 236]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Page 236]

Intext Questions | Q 1 | Page 236

Explain different ways to induce current in a coil.

Intext Questions [Page 237]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Page 237]

Intext Questions | Q 1 | Page 237

State the principle of an electric generator.

Intext Questions | Q 2 | Page 237

Name some sources of direct current.

Intext Questions | Q 3 | Page 237

Which sources produce alternating current?

Intext Questions | Q 4 | Page 237

A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each

• two revolutions

• one revolution

• half revolution

• one-fourth revolution

Intext Questions [Page 238]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Intext Questions [Page 238]

Intext Questions | Q 1 | Page 238

Name safety measures commonly used in electric circuits and appliances.

Intext Questions | Q 2 | Page 238

An electric oven of 2 kW is operated in a domestic electric circuit (220 V) that has a current rating of 5 A. What result do you expect? Explain.

Intext Questions | Q 3 | Page 238

What precaution should be taken to avoid the overloading of domestic electric circuits?

Exercises [Pages 240 - 241]

### NCERT solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Exercises [Pages 240 - 241]

Exercises | Q 1 | Page 240

Which of the following correctly describes the magnetic field near a long straight wire?

• The field consists of straight lines perpendicular to the wire

• The field consists of straight lines parallel to the wire

• The field consists of radial lines originating from the wire

• The field consists of concentric circles centred on the wire

Exercises | Q 2 | Page 240

The phenomenon of electromagnetic induction is

• the process of charging a body

• the process of generating magnetic field due to a current passing through a coil

• producing induced current in a coil due to relative motion between a magnet and the coil

• the process of rotating a coil of an electric motor

Exercises | Q 3 | Page 240

The device used for producing electric current is called a ______.

• generator

• galvanometer

• ammeter

• motor

Exercises | Q 4 | Page 240

The essential difference between an AC generator and a DC generator is that

• AC generator has an electromagnet while a DC generator has permanent magnet.

• DC generator will generate a higher voltage.

• AC generator will generate a higher voltage.

• AC generator has slip rings while the DC generator has a commutator.

Exercises | Q 5 | Page 240

At the time of short circuit, the current in the circuit

• reduces substantially

• does not change

• increases heavily

• vary continuously

Exercises | Q 6.1 | Page 240

State whether the following statement is true or false.

An electric motor converts mechanical energy into electrical energy.

• True

• False

Exercises | Q 6.2 | Page 240

State whether the following statement is true or false.

An electric motor converts mechanical energy into electrical energy.

• True

• False

Exercises | Q 6.3 | Page 240

State whether the following statement is true or false

The field at the centre of a long circular coil carrying current will be parallel straight lines

• True

• False

Exercises | Q 6.4 | Page 240

State whether the following statement is true or false.

A wire with a green insulation is usually the live wire of an electric supply.

• True

• False

Exercises | Q 7 | Page 240

List two methods of producing magnetic fields.

Exercises | Q 8 | Page 241

How does a solenoid behave like a magnet? Can you determine the north and south poles of a current-carrying solenoid with the help of a bar magnet? Explain.

Exercises | Q 9 | Page 241

When is the force experienced by a current-carrying conductor placed in a magnetic field largest?

Exercises | Q 10 | Page 241

Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?

Exercises | Q 11.1 | Page 241

Draw figure ‘Electric motor’ and working

Exercises | Q 11.2 | Page 241

Principle of Electric motor

Exercises | Q 11.3 | Page 241

What is the function of a split ring in an electric motor?

Exercises | Q 12 | Page 241

Name some devices in which electric motors are used

Exercises | Q 13.1 | Page 241

A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is pushed into the coil?

Exercises | Q 13.2 | Page 241

A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is withdrawn from inside the coil?

Exercises | Q 13.3 | Page 241

A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside the coil?

Exercises | Q 14 | Page 241

Two circular coils A and B are placed closed to each other. If the current in the coil A is changed, will some current be induced in the coil B? Give reason.

Exercises | Q 15.1 | Page 241

State the rule to determine the direction of a magnetic field produced around a straight conductor-carrying current.

Exercises | Q 15.2 | Page 241

State the rule to determine the direction of a force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it

Exercises | Q 15.3 | Page 241

State the rule to determine the direction of a current induced in a coil due to its rotation in a magnetic field

Exercises | Q 16 | Page 241

Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes?

Exercises | Q 17 | Page 241

What happens to the flow of electric current during a short circuit?

Exercises | Q 18 | Page 241

What is the function of an earth wire? Why is it necessary to earth metallic appliances?

## Solutions for Chapter 13: Magnetic Effects of Electric Current

Intext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsIntext QuestionsExercises

## NCERT solutions for Class 10 Science chapter 13 - Magnetic Effects of Electric Current

Shaalaa.com has the CBSE Mathematics Class 10 Science CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Class 10 Science CBSE 13 (Magnetic Effects of Electric Current) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Class 10 Science chapter 13 Magnetic Effects of Electric Current are Magnetic Effect of Electric Current, Magnetic Field Lines, Rule to Find the Direction of Magnetic Field, Magnetic Field Due to Current in a Loop (Or Circular Coil), Magnetic Field Due to a Current Carving Cylindrical Coil (or Solenoid), Force on a Current Carrying Conductor in a Magnetic Field, Magnetic Field, Magnetic Field Due to a Current Carrying Straight Conductor, Electric Motor, Electromagnetic Induction, Alternating Current (A.C.) Generator, Direct Current Motor, Household Electrical Circuits, Distinction Between an A.C. Generator and D.C. Motor, Types of current: Alternating Current (A.C.) and Direct Current (D.C.), Faraday's Laws of Electromagnetic Induction, Electric Generator, Magnetic Effect of Electric Current, Magnetic Field Lines, Rule to Find the Direction of Magnetic Field, Magnetic Field Due to Current in a Loop (Or Circular Coil), Magnetic Field Due to a Current Carving Cylindrical Coil (or Solenoid), Force on a Current Carrying Conductor in a Magnetic Field, Magnetic Field, Magnetic Field Due to a Current Carrying Straight Conductor, Electric Motor, Electromagnetic Induction, Alternating Current (A.C.) Generator, Direct Current Motor, Household Electrical Circuits, Distinction Between an A.C. Generator and D.C. Motor, Types of current: Alternating Current (A.C.) and Direct Current (D.C.), Faraday's Laws of Electromagnetic Induction, Electric Generator.

Using NCERT Class 10 Science solutions Magnetic Effects of Electric Current exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE Class 10 Science students prefer NCERT Textbook Solutions to score more in exams.

Get the free view of Chapter 13, Magnetic Effects of Electric Current Class 10 Science additional questions for Mathematics Class 10 Science CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.

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