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🔌 CIRCUITS COURSE · CLASS 1 → 12

Circuits, from Class 1 to Class 12

Every unit: watch a short film, answer 3 quick questions, then build it yourself in Circuit Studio. Each class follows your school book where it has a circuit chapter, and your Curious Labs lab projects everywhere else.

83 of 83 units ready · more every month

▶ Start: ⚡ Electricity makes things work

Spark

Class 1–3Picture-first: what electricity is, loops, switches, buzzers, motors — and the first sensors.
💡
CLASS 1
What is electricity?
📘 No science book in Class 1🔧 Traffic Light · Paper Circuit Card · Windmill · Smart House
📄 Notes
  1. ⚡Electricity makes things work▶ open
  2. 🦺Stay safe: never the socket▶ open
  3. 🔋The battery: a box of push▶ open
  4. 🔁Close the loop, the light glows▶ open
  5. 🧪What lets electricity through?▶ open
  6. 💡LED: a tiny light▶ open
  7. 🌬️Wind can make electricity▶ open
🔦
CLASS 2
Torches, buzzers & motors
📘 No science book in Class 2🔧 Torch · Buzz Wire · Smart Fan · Moving Car · Automatic Door · Sound Toy
📄 Notes
  1. 🔦Inside a torch▶ open
  2. 🔔Buzzer: electricity makes sound▶ open
  3. 🌀Motor: electricity makes things spin▶ open
  4. 🚗Wheels, axles and a moving car▶ open
  5. 🚪A door that opens by itself▶ open
  6. 👏A toy that hears▶ open
🚦
CLASS 3
Robots, signals & sensors
📘 EVS — everyday things (no circuit chapter)🔧 Motor Robot · Traffic Signal · Smart Dustbin · Water Level · Smart Alarm
📄 Notes
  1. 🤖Actuators and the motor robot▶ open
  2. 🚦Traffic signal: a switch for each light▶ open
  3. 🗑️A sensor opens the dustbin▶ open
  4. 💧Water carries electricity▶ open
  5. 🚨A smart alarm▶ open

Builder

Class 4–6The breadboard, every basic part, the first sensors and the Arduino brain.
🍞
CLASS 4
The breadboard & first sensors
📘 EVS Ch 7 · How Things Work🔧 Line Follower · Night Lamp · Smart Parking · Obstacle Robot · Weather Station · Plant Reminder
📄 Notes
  1. 🍞The breadboard▶ open
  2. 🌈Jumper wires and their colours▶ open
  3. 💡LED legs and the resistor▶ open
  4. 🧠The Arduino: a tiny brain▶ open
  5. ☀️LDR: knows when it's dark▶ open
  6. 👀IR: two eyes for a robot▶ open
  7. 📏Ultrasonic: distance by echo▶ open
  8. ⚙️Motors and the motor driver▶ open
  9. 🌡️DHT11: a weather station▶ open
  10. 🔔Push button and buzzer: a doorbell▶ open
  11. 🌱Soil sensor: thirsty plants▶ open
  12. 💛Design for someone: an assistive device▶ open
🏠
CLASS 5
Energy & automation
📘 EVS Ch 7 · Energy — How Things Work🔧 Smart Home · Fire Alarm · Servo Arm · Irrigation · Solar Car · RFID Attendance
📄 Notes
  1. ⚡Energy: what electricity becomes▶ open
  2. 🏠Relay: a small signal switches a big one▶ open
  3. 🚒Fire alarm: the flame sensor▶ open
  4. 🦾Servo: turn to an exact angle▶ open
  5. 🌱Pump, soil sensor and relay▶ open
  6. ☀️Solar panel: sunlight to electricity▶ open
  7. 🪪RFID: tap a card▶ open
🧲
CLASS 6
Magnets, wireless & smart systems
📘 Curiosity Ch 4 · Exploring Magnets🔧 Bluetooth Robot · Ultrasonic Dustbin · Watering Bot · PIR Alarm · Energy Monitor
📄 Notes
  1. 🧲Magnets: poles, pull and push▶ open
  2. 📱Bluetooth: a phone drives the robot▶ open
  3. 🗑️Ultrasonic dustbin: open, wait, close▶ open
  4. 🌾Watering bot: two sensors and a log▶ open
  5. 🛡️Dual-zone security alarm▶ open
  6. 🔌Energy monitor: watts, units and rupees▶ open

Maker

Class 7–9The school book's circuit chapters, magnets and heat, volts, amps and ohms.
🔋
CLASS 7
Circuits and their components
📘 Curiosity Ch 3 · Electricity: Circuits and their Components🔧 Electronic Blind Stick · Adaptive Traffic Lights
📄 Notes
  1. 💡The electric lamp: filament or LED▶ open
  2. 🔋Cells and batteries▶ open
  3. 🔁Circuits, switches and conductors▶ open
  4. ✏️Circuit diagrams▶ open
  5. 🦯Electronic blind stick▶ open
  6. 🚦Adaptive traffic lights▶ open
🔥
CLASS 8
Magnetic & heating effects
📘 Curiosity Ch 4 · Electricity: Magnetic and Heating Effects🔧 Farming Robot · Smart Classroom
📄 Notes
  1. 🧲Current makes a magnet▶ open
  2. 🔔Electromagnets at work▶ open
  3. 🔥Current makes heat▶ open
  4. 🛡️The fuse, and staying safe▶ open
  5. 🚜Farming robot: sense and spray▶ open
  6. 🏫Smart classroom: four sensors▶ open
📏
CLASS 9
Power, V, I and R
📘 Exploration Ch 7 · Work, Energy and Simple Machines🔧 IoT Smart Electricity Meter · Disaster Response Robot
📄 Notes
  1. 💪Work, energy and power▶ open
  2. 🚰Voltage, current and resistance▶ open
  3. 🌈Colour code and the multimeter▶ open
  4. 📐Ohm's law, a first look▶ open
  5. 📟IoT smart electricity meter▶ open
  6. 🛟Disaster response robot▶ open

Engineer

Class 10–12Board years: Class 10 Electricity, Class 12 Current Electricity and devices.
⚡
CLASS 10
Electricity (board)
📘 Science Ch 11 · Electricity + Ch 12 · Magnetic Effects of Electric Current🔧 Board practicals: V–I of a resistor · series & parallel · IoT Patient Monitor
📄 Notes
  1. 🔋Current and potential difference▶ open
  2. 📈Ohm's law: the V–I practical▶ open
  3. 🧵What resistance depends on▶ open
  4. 🔗Resistors in series▶ open
  5. 🔀Resistors in parallel▶ open
  6. 🔥Heating effect, power and kWh▶ open
  7. 🧭Magnetic field of a current▶ open
  8. 🫱Force on a current: Fleming's rule▶ open
  9. 🏠AC, DC and home circuits▶ open
  10. 🏥IoT patient monitor▶ open
🌉
CLASS 11
Bridge to Class 12
📘 No electricity unit in Class 11 physics🔧 ESP32 sensor project
📄 Notes
  1. ⚛️Charge and current, atom by atom▶ open
  2. 🪜The potential divider▶ open
  3. 🚪The diode: a one-way gate▶ open
  4. 📡ESP32 sensor project▶ open
🎓
CLASS 12
Current electricity & devices (board)
📘 Physics Ch 2, 3, 4, 6, 7, 14 (CBSE 2026–27)🔧 Practical file: metre bridge · galvanometer · diode I–V
📄 Notes
  1. 🐌Drift velocity and resistivity▶ open
  2. 🔋EMF and internal resistance▶ open
  3. 🕸️Kirchhoff's rules▶ open
  4. ⚖️Wheatstone and metre bridges▶ open
  5. 🎛️Galvanometer to ammeter▶ open
  6. 〰️Induction and AC: RMS▶ open
  7. 🧩The p-n junction▶ open
  8. 🔷The diode as a rectifier▶ open