ISC Class 11 Syllabus 2027 Electricity and Electronics

ISC YEAR 2027

INDIAN SCHOOL CERTIFICATE
EXAMINATION

ELECTRICITY
&
ELECTRONICS
(866)

February 2025
____________________________________________________________________________________________

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MISSION STATEMENT

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Examinations is committed to serving the nation's
children, through high quality educational
endeavours, empowering them to contribute towards
a humane, just and pluralistic society, promoting
introspective living, by creating exciting learning
opportunities, with a commitment to excellence.

ETHOS OF CISCE

Trust and fair play.
Minimum monitoring.
Allowing schools to evolve their own niche.
Catering to the needs of the children.
Giving freedom to experiment with new ideas
and practices.
Diversity and plurality - the basic strength for
evolution of ideas.
Schools to motivate pupils towards the
cultivation of:
Excellence - The Indian and Global
experience.
Values - Spiritual and cultural - to be the bedrock
of the educational experience.
Schools to have an 'Indian Ethos', strong roots in
the national psyche and be sensitive to national
aspirations.

ELECTRICITY AND ELECTRONICS (866)

The syllabus is not intended to be used as a teaching An experimental approach to the subject is envisaged
syllabus, or to suggest teaching order. It is expected and it is assumed that candidates will spend adequate
that teachers will wish to develop the subject in their time on individual experimental work. Questions may
own way. be set requiring descriptions of experimental
procedures. Candidates should also know how to
In the examination, questions will be aimed more at exhibit the results of experiments graphically and how
testing the candidates' understanding of fundamental to make deductions from graphs, e.g. from intercepts
principles, and the application of these principles to and gradient in the case of straight-line graphs,
problem situations, than to their ability to remember a deductions by interpolation.
large number of facts. Some questions will include Candidates will be expected to be conversant with SI
simple calculations. units.

CLASS XI

There will be two papers in the subject: 5. Heating effect of an electric current. Application
of heating effect, e.g. heating appliances, filament
Paper I - Theory: 3 hours…… 80 Marks lamps, electric welding, electric carbon arc, and
Paper II - Project Work ……. 20 Marks use of fuses.
6. Chemical effect of an electric current.
Electrolytes and non-electrolytes. Elementary
phenomena of electrolysis, including the
PAPER I (THEORY): 80 Marks electrolysis of acidified water, and of copper (II)
1. Introduction to electricity. Structure of atoms; the sulphate solution using copper or platinum
model atom, nucleus, electrons. Unit of charge; electrodes. The factors affecting the mass of
coulomb. Potential difference and electromotive substance liberated in electrolysis and the
force. Production of electricity by friction, measurement of current by voltameter
magnetism and chemical action. (coulometer). Primary cells; Leclanche cell;
polarization; local action. Accumulators;
2. Electric circuit. Electric current I = Qt. Ampere as
construction and characteristics of lead-acid cell;
rate of flow of charge. Ohm's law as applied to a
techniques of testing and charging batteries; care
single resistance (V/I=R) and to a whole circuit
and maintenance.
(E/I= total R).
7. Electromagnetism. Simple phenomenon of
3. Equivalence. Cell groupings. Resistances in series
magnetism. Ferromagnetic properties of iron and
and parallel. Resistivity; R = Pl/A. Calculation of
steel. Magnetic effect of an electric current. The
resistance of wire. Temperature coefficient of
magnetic field associated with a current flowing in
resistance. Ammeter shunts; voltmeter
a straight wire, a circular coil, and a solenoid.
multipliers; series ohmmeter.
Force on a current-carrying conductor in a
4. Work, power and energy. Work and energy. The magnetic field; the right-hand and corkscrew
joule. E =V/t (QV). Unit of power and energy; the rules. Magnetic flux density. Permeability.
watt, the kilowatt, the watt-hour and kilowatt-
8. Electromagnetic induction. Phenomenon of
hour. Use of wattmeter. Calculation of electrical
electromagnetic induction. Faraday's law; Lenz's
energy and power. Local tariff system.
law. Induced e.m.f.; a straight conductor cutting

ISC Examination Year 2027
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flux; E = - dφ/dt = Blv. Self-inductance; (ii) Modify the circuit using two resistors which
E = - Ldi/dr. Mutual inductance; the induction may be connected in (a) series and (b) in
coil. parallel. Draw the same and explain the effect
9. Elementary electrostatics. Electric field; E = V/d. in each case.
Capacitance and the factors affecting capacitance. Does the current drawn from the cell remain
Electric flux density; D = Q/A. Permittivity;
constant? Discuss.
m = D/E. Energy of charged capacitors in series
and in parallel. (iii) How is an ammeter and a voltmeter connected
10. Alternating current. Generation of an a.c. with a in an electrical circuit? Give reason for your
single loop coil. Sinusoidal wave form. Peak answer.
values; r.m.s. values (Only ratios will be 2. You are given the following items: rheostat,
expected.) Simple a.c. circuits. different kinds of keys, different types of
11. Transformer. Principle of the single-phase resistances (carbon resistor, wire wound
transformer, and iron loss (hysteresis and eddy resistance box), different battery eliminators,
current). dc sources (cells, batteries). Prepare a report
12. Lighting. Common types of lamps; candela, covering the following:
lumen, lux, lux meter (light-meter). Illumination (i) Drawing a circuit diagram using rheostat
and photometry. Gas-filled lamps and fluorescent as a potential divider and connecting the
lamp circuits; preheat, instant and rapid starts.
same to determine the voltage range
provided.
PAPER II (PROJECT WORK): 20 Marks (ii) Identifying the functions of given keys in
In addition to the syllabus prescribed above, the electric circuit and drawing diagrams
candidates are also required to be assessed in Project of each key.
Work. All candidates will be required to have (iii) Explaining the different types of
completed two projects from any topic/s covered in resistances given.
theory.
(iv) Comparing the connecting wires used in
The Project work will be assessed by the subject household circuits and those used in the
teacher. laboratory.
Mark allocation for each project (10 marks): (v) Differentiating between battery
Criteria Marks eliminators and dc sources (cells,
batteries) and explaining how these are
1. Title of the Project and 1 different from car batteries.
Introduction
2. Content 3 3. Assemble a household circuit comprising
three bulbs (25W, 40W, 60W, 220V each),
3. Presentation and originality 2
three (on/off) switches, a socket, a fuse (1.0
4. Conclusion/Comments/Summary 1 A), flexible connecting wire, main switch and
5. Viva- Voce 3 a power source. Calculate the maximum
TOTAL 10 current drawn for three bulbs used in the
circuit.
List of suggested assignments for Project Work: Draw a circuit diagram consisting of one tube
1. Use the given apparatus and material viz. resistor, light point, one staircase point using two-way
ammeter (0-1.5 A), voltmeter (0-5 V), rheostat, switch, one fan point and one washing
battery, one-way key, sand paper and connecting machine point.
wires and do the following: 4. Conduct an extensive study on any Indian
(i) Assemble an electrical circuit and draw the /foreign Physicist. Prepare a report discussing
same. their contributions.

ISC Examination Year 2027
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