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Selina solutions for Concise Physics Class 7 ICSE chapter 7 - Electricity and Magnetism [Latest edition]

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Concise Physics Class 7 ICSE - Shaalaa.com

Chapter 7: Electricity and Magnetism

Objective QuestionsShort/Long Answer Questions

Selina solutions for Concise Physics Class 7 ICSE Chapter 7 Electricity and Magnetism Exercise Objective Questions

Objective Questions | Q 1.01

Write true or false for a given statement.

A current-carrying coil, when suspended freely, can rest in any direction.

  • True

  • False

Objective Questions | Q 1.02

Write true or false for a given statement.

 A coil carrying current behaves like a magnet.

  • True

  • False

Objective Questions | Q 1.03

Write true or false for a given statement.

In an electromagnet, the core is made up of copper.

  • True

  • False

Objective Questions | Q 1.04

Write true or false for a given statement.

An electric bell uses an electromagnet.

  • True

  • False

Objective Questions | Q 1.05

Write true or false for a given statement.

An electromagnet with soft iron core is a temporary magnet.

  • True

  • False

Objective Questions | Q 1.06

Write true or false for a given statement.

We use cell as the source of electricity to run an electric immersion rod.

  • True

  • False

Objective Questions | Q 1.07

Write true or false for a given statement.

A torch bulb glows if the terminals of the bulb are connected to the terminals of a cell by the metallic wire

  • True

  • False

Objective Questions | Q 1.08

Write true or false for a given statement.

Wool is a conductor of electricity.

  • True

  • False

Objective Questions | Q 1.09

Write true or false for a given statement.

Silver is an insulator of electricity.

  • True

  • False

Objective Questions | Q 1.1

Write true or false for a given statement.

Our body is a conductor of electricity.

  • True

  • False

Objective Questions | Q 1.11

Write true or false for a given statement.

For a circuit to be complete, every part of it must be made up of conductors.

  • True

  • False

Objective Questions | Q 1.12

Write true or false for a given statement.

All metals are conductors of electricity.

  • True

  • False

Objective Questions | Q 1.13

Write true or false for a given statement.

The switch should not be touched with wet hands.

  • True

  • False

Objective Questions | Q 1.14

Write true or false for a given statement.

A switch is an on-off device in an electric circuit.

  • True

  • False

Objective Questions | Q 2.1

 Fill in the blank

 A magnet has ______ poles.

Objective Questions | Q 2.2

Fill in the blank 

Like poles ______ each other and unlike poles _____

Objective Questions | Q 2.3

Fill in the blank

 An electromagnet is used to separate large mass of ______ scrap.

Objective Questions | Q 2.4

Fill in the blank

The strength of the magnetic field of an electromagnet is increased by inserting a core of soft ______

Objective Questions | Q 2.5

Fill in the blank 

In a torch we use ______ as the source of electricity.

Objective Questions | Q 2.6

Fill in the blank

To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.

Objective Questions | Q 2.7

Fill in the blank

A group of two or more cells is called a ________.

Objective Questions | Q 2.8

Fill in the blank

_______ pass electricity through them.

Objective Questions | Q 2.9

Fill in the blank

_______ do not pass electricity through them.

Objective Questions | Q 3

Match the following

Column  A    Column  B 
(a). Human body  (1). electric bell 
(b). Silk thread  (2). current 
(c). Charge in motion  (3). conductor 
(d). soft iron  (4). electromagnet 
(e) . Electromagnet  (5). insulator 
Objective Questions | Q 4.1

Select the correct alternative

A freely suspended magnet rests in

  • east-west direction

  • north-south direction

  • north-east direction

  • north-west direction

Objective Questions | Q 4.2

Select the correct alternative

Electromagnets are made up of

  • steel

  • copper

  • brass

  • soft iron

Objective Questions | Q 4.3

Select the correct alternative

An electromagnet is used in 

  • electric oven

  • ammeter

  • electric bell

  • radio set

Objective Questions | Q 4.4

Select the correct alternative

The purpose of armature in an electric bell is

  • to make and break the circuit

  • to produce sound

  • to produce magnetic field

  • to provide spring action

Objective Questions | Q 4.5

Select the correct alternative

In a torch, the source of electricity is

  • the bulb

  • the switch

  • the cell

  • the mains

Objective Questions | Q 4.6

Select the correct alternative

Electricity can flow through

  • wood

  • rubber

  • plastic

  • copper wire

Objective Questions | Q 4.7

Select the correct alternative

Electricity does not flow through

  • human body

  • animals body

  • rubber

  • silver

Objective Questions | Q 4.8

Select the correct alternative

We should not touch the switch with wet hands otherwise

  • electricity may pass through our body

  • electricity may not pass through the appliance

  • circuit may break

  • the switch may get off

Selina solutions for Concise Physics Class 7 ICSE Chapter 7 Electricity and Magnetism Exercise Short/Long Answer Questions

Short/Long Answer Questions | Q 1

State two properties of a bar magnet ?

Short/Long Answer Questions | Q 2

How will you test whether a given rod is a magnet or not ?

Short/Long Answer Questions | Q 3

How will you test whether a given rod is made of iron or not?

Short/Long Answer Questions | Q 4

You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?

Short/Long Answer Questions | Q 5

You are given a magnet. How will you use it to find north- south direction at a place ?

Short/Long Answer Questions | Q 6

Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?

Short/Long Answer Questions | Q 7

“Poles exist in pair”. Comment on this statement ?

Short/Long Answer Questions | Q 8

What is a magnetic compass ? State its use.

Short/Long Answer Questions | Q 9

Explain the meaning of the term magnetic field ?

Short/Long Answer Questions | Q 10

What is an electromagnet?

Short/Long Answer Questions | Q 11

Name the material of an electromagnet?

Short/Long Answer Questions | Q 12

Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?

Short/Long Answer Questions | Q 13

You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horse shoe electromagnet ?

Short/Long Answer Questions | Q 14

Name two factors on which the strength of magnetic field of an electromagnet depends ?

Short/Long Answer Questions | Q 15

State two ways by which the strength of magnetic field of an electromagnet can be increased ?

Short/Long Answer Questions | Q 16

State two common uses of electromagnets  ?

Short/Long Answer Questions | Q 17

Name a domestic device in which an electromagnet is used ?

Short/Long Answer Questions | Q 18

Draw a neat and labelled diagram of an electric bell and describe its working ?

Short/Long Answer Questions | Q 19

The incomplete diagram of an electric bell is given in fig. Complete the diagram and label its different parts ?

Short/Long Answer Questions | Q 20

What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.

Short/Long Answer Questions | Q 21

Define the term current ?

Short/Long Answer Questions | Q 22

Name four appliances which work using electricity ?

Short/Long Answer Questions | Q 23

Name two sources of electricity.

Short/Long Answer Questions | Q 24

What is a battery?

Short/Long Answer Questions | Q 25

What is an electric circuit ?

Short/Long Answer Questions | Q 26

Describe an experiment to show that electricity flows only if the circuit is complete and it does not flow if the circuit is incomplete.

Short/Long Answer Questions | Q 27

You are provided with a torch bulb, a cell and two plastic coated f metal wires. Draw a diagram to show a complete circuit to light the bulb.

Short/Long Answer Questions | Q 28

In which of the following case the bulb will glow :

Short/Long Answer Questions | Q 29

Distinguish between conductors and insulators of electricity. Give two examples of each.

Short/Long Answer Questions | Q 30

Select conductors and insulators from the following :
Glass, silver, copper, wood, paper, pure water, impure water, aluminium, iron, leather, plastic, steel, human body and ebonite.

Short/Long Answer Questions | Q 31

The following diagram shows four circuits A, B, C and D. Each circuit has a cell and a torch bulb. Name the circuits in which the bulb will glow ? Give reason to your answer

Short/Long Answer Questions | Q 32

The diagram given below shows a bulb connected with a cell having terminals A and B. Mark the direction of current in the bulb.

Short/Long Answer Questions | Q 33

State the function of each of the following in an electric circuit and draw its symbolic representation: (1) Switch and (2) Cell.

Short/Long Answer Questions | Q 34

Draw a circuit diagram for a bulb connected to a cell with a switch. Mark arrow in the diagram to indicate the direction of flow of current.

Short/Long Answer Questions | Q 35

In which arrangement are the appliances connected in the electric circuit of our homes, Series or Parallel ? Give one reason for your answer.

Short/Long Answer Questions | Q 36

State two precautions that you must take when switching on an electric circuit.

Chapter 7: Electricity and Magnetism

Objective QuestionsShort/Long Answer Questions
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Concise Physics Class 7 ICSE - Shaalaa.com

Selina solutions for Concise Physics Class 7 ICSE chapter 7 - Electricity and Magnetism

Selina solutions for Concise Physics Class 7 ICSE chapter 7 (Electricity and Magnetism) 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 Concise Physics Class 7 ICSE 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. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Physics Class 7 ICSE chapter 7 Electricity and Magnetism are Laws of Magnetism, Test for a Magnet (By Repulsion), Electromagnetism, Electromagnets and Their Applications- Electric Bell, Electric Current as a Flow of Charges, Electric Cell as Source of Electricity, Resistors as Components that Oppose the Flow of Current, Symbolic Representation of Electrical Components (Key,Battery, Bulb, Conducting Wire, Resistor), Simple Electric Circuit - Series and Parallel, Battery as a Collection of Cells Connected in Series, Good and Bad Conductors of Electricity, Concept of Electricity and Magnetism.

Using Selina Class 7 solutions Electricity and Magnetism 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 Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 7 Electricity and Magnetism Class 7 extra questions for Concise Physics Class 7 ICSE and can use Shaalaa.com to keep it handy for your exam preparation

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