Story
PAGE 1 — WHAT IS ELECTRIC CURRENT?
Panel 1
Scene: Class 10 science classroom. Mr. Rao draws a circuit on the board.
Arjun: Sir, what exactly is electric current?
Mr. Rao: Electric current is the rate of flow of electric charge through a conductor.
Panel 2
Electrons move through a wire.
Meera: In a metal wire, electric current is caused by moving electrons.
Spark: Tiny charges on the move!
Panel 3
Mr. Rao writes:
I = Q/t
Mr. Rao: Current is charge flowing per unit time.
Panel 4
Arjun: What is its SI unit?
Meera: The SI unit is the ampere (A).
Mr. Rao: One ampere means one coulomb of charge flows in one second.
Panel 5
A battery, switch and bulb are shown.
Arjun: Does current flow through an open circuit?
Mr. Rao: No. The circuit must have a complete conducting path.
Panel 6
The switch closes and the bulb lights.
Spark: Complete circuit = current can flow!
Arjun: So electricity needs a path to travel.
PAGE 2 — POTENTIAL DIFFERENCE AND CIRCUITS
Panel 1
Mr. Rao holds up a battery.
Mr. Rao: But what makes charges move through a circuit?
Arjun: The battery?
Panel 2
Mr. Rao: More precisely, the battery provides a potential difference, or voltage.
Meera: It acts like a push that drives charge through the circuit.
Panel 3
Mr. Rao writes:
V = W/Q
Mr. Rao: Potential difference is the work done to move a unit charge between two points.
Panel 4
Arjun: What's the SI unit?
Mr. Rao: Volt (V).
Spark: One volt = one joule per coulomb!
Panel 5
A voltmeter is connected across a bulb.
Meera: A voltmeter measures potential difference.
Mr. Rao: Therefore, it is connected in parallel.
Panel 6
An ammeter is shown in series.
Mr. Rao: An ammeter measures current and is connected in series.
Spark: Ammeter → series! Voltmeter → parallel!
PAGE 3 — RESISTANCE
Panel 1
Arjun tries to push through a narrow doorway.
Arjun: Why is this so difficult?
Meera: Imagine electric charges facing something similar. That's resistance.
Panel 2
Mr. Rao: Resistance is the property of a conductor that opposes the flow of electric current.
Panel 3
Mr. Rao writes:
R = V/I
Arjun: So resistance depends on voltage and current?
Mr. Rao: For a conductor under appropriate constant conditions, yes.
Panel 4
Mr. Rao: The SI unit of resistance is the ohm (Ω).
Spark: Higher resistance → less current for the same voltage!
Panel 5
Three wires appear: long, short, thin and thick.
Meera: Resistance increases with the length of a wire.
Mr. Rao: And resistance decreases when its cross-sectional area increases.
Panel 6
Different materials appear.
Mr. Rao: Resistance also depends on the material and temperature.
Arjun: So the wire itself matters!
PAGE 4 — OHM'S LAW
Panel 1
Mr. Rao sets up a battery, resistor, ammeter and voltmeter.
Mr. Rao: Let's investigate Ohm's Law.
Panel 2
Mr. Rao changes the voltage.
Arjun: The current changes too!
Meera: Let's record the readings.
Panel 3
Mr. Rao writes:
V ∝ I
Mr. Rao: At constant temperature, potential difference is directly proportional to current.
Panel 4
He writes:
V = IR
Spark: The famous Ohm's Law!
Panel 5
A straight-line V-I graph through the origin appears.
Meera: The V-I graph is a straight line through the origin for an ohmic conductor under constant physical conditions.
Panel 6
Arjun: If V = 12 V and R = 4 Ω, then...
Meera: I = V/R = 3 A.
Spark: Electricity math complete!
PAGE 5 — RESISTIVITY
Panel 1
Meera holds a copper wire and a nichrome wire.
Arjun: Why don't all materials have the same resistance?
Mr. Rao: Because materials have different resistivities.
Panel 2
Mr. Rao writes:
R = ρL/A
Mr. Rao: Here, ρ represents resistivity.
Panel 3
Meera: L is the length and A is the cross-sectional area.
Mr. Rao: Correct.
Panel 4
A long wire and short wire are compared.
Mr. Rao: Increasing length increases resistance.
Arjun: Increasing area decreases resistance.
Panel 5
Copper wires are shown in a house.
Mr. Rao: Copper has low resistivity, so it is useful for electrical wiring.
Panel 6
A nichrome heating element glows.
Mr. Rao: Nichrome has relatively high resistivity and a high melting point, making it useful in heating elements.
Spark: Material matters!
PAGE 6 — SERIES AND PARALLEL
Panel 1
Three resistors are connected one after another.
Mr. Rao: This is a series combination.
Panel 2
Mr. Rao writes:
Rs = R₁ + R₂ + R₃
Meera: The same current flows through each resistor in series.
Panel 3
One bulb breaks and all the bulbs go out.
Arjun: So one break can stop the whole circuit!
Mr. Rao: Exactly.
Panel 4
Three resistors are now connected in parallel.
Mr. Rao: In a parallel combination, the potential difference across each branch is the same.
Panel 5
Mr. Rao writes:
1/Rp = 1/R₁ + 1/R₂ + 1/R₃
Meera: The current divides among the different branches.
Panel 6
A house with a fan, TV and light is shown.
Mr. Rao: Domestic appliances are connected mainly in parallel.
Arjun: So each appliance can work independently!
PAGE 7 — HEATING EFFECT OF ELECTRIC CURRENT
Panel 1
An electric heater glows red.
Arjun: Why does the heater become hot?
Mr. Rao: Electrical energy is converted into heat when current passes through resistance.
Panel 2
Mr. Rao writes:
H = I²Rt
Mr. Rao: This is the Joule's law of heating.
Panel 3
Meera: Heat depends on current, resistance and time.
Spark: And current has a squared effect!
Panel 4
Pictures of an iron, toaster, kettle and heater.
Mr. Rao: This effect is useful in electric heaters, irons, toasters and kettles.
Panel 5
A fuse wire melts.
Arjun: What's the purpose of a fuse?
Mr. Rao: If excessive current flows, the fuse wire heats up and melts, breaking the circuit.
Panel 6
Spark wears a superhero cape.
Spark: Fuse = circuit protector!
Mr. Rao: Never replace electrical safety devices with unsafe substitutes.
PAGE 8 — ELECTRIC POWER AND ENERGY
Panel 1
A fan, bulb and heater operate at different rates.
Arjun: How do we measure how quickly an appliance uses electrical energy?
Mr. Rao: We use electric power.
Panel 2
Mr. Rao writes:
P = VI
Mr. Rao: Power is the rate of consumption of electrical energy.
Panel 3
More formulas appear:
P = I²R
P = V²/R
Meera: These forms come from Ohm's law.
Panel 4
A 100 W bulb and 1000 W heater are compared.
Arjun: The 1000 W heater uses energy faster.
Mr. Rao: Correct.
Panel 5
An electricity meter is shown.
Mr. Rao: Electrical energy used in homes is commonly measured in kilowatt-hours (kWh).
Meera: One kWh is called one unit of electrical energy.
Panel 6
Spark points dramatically at the equation:
1 kWh = 3.6 × 10⁶ J
Spark: Remember this for your exam!
PAGE 9 — DOMESTIC ELECTRIC CIRCUITS & FINAL REVISION
Panel 1
The students enter a house containing lights, fans and appliances.
Arjun: How does electricity safely reach all these appliances?
Mr. Rao: Through a domestic electric circuit.
Panel 2
A diagram shows Live, Neutral and Earth wires.
Mr. Rao: Domestic circuits use live, neutral and earth connections.
Meera: Appliances are connected in parallel.
Panel 3
A three-pin plug is shown.
Mr. Rao: The earth connection provides a safer path for leakage current and helps reduce the risk of electric shock when properly connected.
Spark: Safety first!
Panel 4
An MCB/fuse and switch are shown.
Mr. Rao: Fuses and circuit breakers protect circuits from excessive current and short circuits.
Arjun: So safety devices are essential!
Panel 5 — RAPID REVISION
All the key formulas appear around the characters:
I = Q/t
V = W/Q
V = IR
R = ρL/A
H = I²Rt
P = VI
1 kWh = 3.6 × 10⁶ J
Meera: Current, potential difference, resistance, resistivity, Ohm's law, heating, power and energy!
Panel 6 — FINAL SPLASH PAGE
All four characters stand dramatically with a glowing electric circuit behind them.
Arjun: I understand the Electricity chapter now!
Meera: Electricity isn't just about formulas. It's about understanding how charge moves and how electrical energy is transferred.
Mr. Rao: Learn the concepts, understand the equations, and practice the numericals.
Spark: ⚡ ELECTRICITY MASTERED! ⚡
THE END
Like It? Make Yours.
Write a story, pick an art style, and Manga Maker draws the rest. Free to try.
Make a Manga