Electromagnetism

Appeared in 10 of the 11 available papers.

Examined in

10 of 11 papers

Appears almost every year — treat as core

Typically worth

7.5 marks

Average per paper it appears in · 75 marks in total

Usual form

Short answer

61% of this chapter's 62 questions

Needs a diagram

60%

37 questions carry a figure — practise drawing them

Question-type distribution

Short answer38
Reasoning6
Diagram6
MCQ5
Identification5
Fill in the blank1
True/False1

Most frequent topics

Magnetic effect of current / electromagnetic induction 32Force on a current-carrying conductor 2Fleming's left-hand rule 2Heat and calorimetry 1Magnetic field and current 1Polarity of a current-carrying coil 1Iron core and magnetic field 1Reversing polarity 1

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Showing 25 of 62 matching questions (75 marks).

25 questions

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

1(xiii)2026

MCQEasy1 mark

The diagram below shows the top view of the Wire A shown by a cross (X), carrying current into the plane of the paper. Which of the compasses is correctly aligned with the magnetic field produced by the current carrying wire? (a) Only 1 is aligned (b) Only 2 is aligned (c) Both 1 and 2 are aligned (d) Both 1 and 2 are not aligned

3(v)

In an AC generator, name the part which has the following functions:

3(v)(a)2026

Short answerEasy1 mark

intensifies the magnetic field.

3(v)(b)2026

Short answerEasy1 mark

maintains electrical contact between the rotating parts and the external circuit.

9(ii)

When the magnet as shown in the diagram, is moved towards the coil at a speed of 5 m s-1, the galvanometer shows a certain deflection to the right. How will the direction and magnitude of deflection change when the coil also moves with a speed of 5 m s-1:

9(ii)(a)2026

Short answerEasy1.5 marks

in the direction of the motion of the magnet?

9(ii)(b)2026

Short answerEasy1.5 marks

in the opposite direction of the motion of the magnet?

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

1(xv)2025

MCQEasy1 mark

The following figure shows a small bar magnet falling freely through a copper ring. For the observer at A, the direction of the induced current will be : (a) clockwise when magnet is above and below the ring (b) anticlockwise when magnet is above and below the ring (c) anticlockwise when magnet is above the ring and clockwise when the magnet is below the ring (d) clockwise when magnet is above the ring and anticlockwise when the magnet is below the ring

2(i)

Complete the following by choosing the correct answers from the bracket:

2(i)(e)2025

Fill in the blankEasy1 mark

In a step-up transformer the turns ratio is ............... [more than 1/ less than 1/ equal to 1].

3(iii)(a)2025

Short answerEasy1 mark

Which of the two, alternating current or direct current, produces a varying magnetic field when it flows through a conductor?

3(iii)(b)2025

Short answerEasy1 mark

State the frequency of the alternating current supply in India

3(v)

Copper wire is wound around a steel bar FT. Current is allowed to pass through the coil for some time and then the bar is removed.

3(v)(a)2025

DiagramModerate1 mark

Draw only the magnetised bar FT and mark its poles.

3(v)(b)2025

DiagramModerate1 mark

Trace two magnetic lines of force around FT clearly indicating the direction

9(iii)

A copper rod PQ carrying current is kept in a magnetic field as shown in the diagram.

9(iii)(a)2025

True/FalseEasy1 mark

The copper rod PQ will move towards C. State True or False.

9(iii)(b)2025

IdentificationEasy1 mark

Name the law used to determine the direction of motion of PQ.

Short answerEasy1 mark

What will be the effect on the force experienced, if the rod PQ is replaced by another copper rod of same length but of greater cross-sectional area?

9(iii)(d)2025

ReasoningModerate1 mark

Justify your answer in (c).

(c).

3(iii)2024

IdentificationEasy2 marks

State two factors affecting the speed of rotation of the coil in a D.C. motor.

8(ii)

Below is the diagram of a transformer:

8(ii)(a)2024

IdentificationEasy1 mark

Identify the type of transformer.

8(ii)(b)2024

ReasoningModerate2 marks

In this type of transformer which of the wire is thicker, the primary or the secondary? Give a reason.

9(iii)(a)2024

IdentificationEasy1 mark

State one factor that affects the magnitude of induced current in an AC generator.

9(iii)(b)

Given below is a circuit to study the magnetic effect of electric current. ABCD is a cardboard kept perpendicular to the conductor XY. A magnetic compass is placed at the point P of the cardboard. P1 and P2 are the positions of the magnetic compass, before and after passing a current through XY respectively.