Quick play · Science

Can you light the bulb?

Build a circuit, close the switch and watch the current flow. Predict what will happen, try it, then see why.

  • Interactive simulators
  • Step-by-step learning
  • Real-world scenarios
  • No installation needed
Open the bulb activity

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Try a quick experiment

Light the Bulb

Close the switch to complete the circuit

+− switch

Switch closed. The bulb is on.

Try a quick experiment

Classes 6–8Change level

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See all Classes 6–8 labs

Go deeper

Algorithms LabSee every stepWatch sorting, searching, trees, heaps and graph algorithms run one step at a time, with animated visuals you can pause and replay.Open the lab System Design LabBuild and test systemsBuild architectures from load balancers, caches, queues and databases, then watch traffic flow and see where they break.Open the lab Atom LabBuild atoms and moleculesBuild atoms by adding protons, neutrons and electrons, and see how the element, charge and isotope change.Open the lab Payments LabFollow a card transactionFollow a card transaction from the terminal through the payment switch to the issuing bank and back, including ISO 8583 messages and NCMC.Open the lab

Explore by subject

View all simulators
Computer Science Algorithms, data structures, system design, networks and operating systems. 19 live simulators Physics Motion, waves, light, heat, electricity and atoms. 25 live simulators Chemistry Reactions, equilibrium, acids and bases, electrochemistry and separation. 15 live simulators Biology Evolution, genetics, ecology, cells and physiology. 10 live simulators Mathematics Calculus, linear algebra, probability, statistics and fractals. 19 live simulators Engineering Circuits, electronics, control systems, structures and energy. 20 live simulators Payments & Finance Card transaction flow, ISO 8583, payment switches and NCMC. 1 live simulator Operations & Economics Queues, inventory, supply chains, scheduling and markets. 11 live simulators Earth & Environment Water, climate, carbon, cities and recycling. 7 live simulators

How SimuVeda works

  1. 1

    Learn

    Each simulator starts with a short explanation of the model, its units and its limits.

  2. 2

    Simulate

    Change the controls and watch the system respond, live, on your phone or computer.

  3. 3

    Experiment

    Follow guided experiments with a prediction to check before you press play.

  4. 4

    Test yourself

    Finish with a challenge question and reveal the worked explanation.

Learning paths

All learning paths
104full simulators live today
83quick-play labs for Class 6–10
9subjects
6–12+from Class 6 to college, mapped to CBSE/NCERT
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