What is CSEEL and what does it offer?

CSEEL (Center for Scientific Exploration and Experiential Learning) is a premier Indian STEM educational initiative offering hands-on science experiments, 3D live laboratory simulations, curriculum-aligned project kits, teacher training workshops, and national science conclaves aligned with NEP 2020.

How does CSEEL support NEP 2020 experiential learning?

CSEEL shifts education from rote memorization to active inquiry and hands-on experimentation. Students observe, build, analyze, and apply scientific concepts to real-world challenges, developing critical thinking and scientific temper as envisioned by NEP 2020.

What subjects and classes are covered in CSEEL simulations and experiments?

CSEEL provides comprehensive physics, chemistry, biology, environmental science, and applied robotics experiments and virtual simulations for students from Class 6 through Class 12, mapped to CBSE, ICSE, and state curricula.

How can schools, educators, and students access CSEEL programs?

Institutions, teachers, and students can explore live simulations, order DIY lab kits, register for national seminars, and join the CSEEL EduNetwork by visiting https://www.cseel.org.

Faraday's Law of Electromagnetic Induction

Experiment video

What you will learn

See how moving a magnet near a coil produces current without any battery, and how the speed of the magnet changes the effect.

Materials needed

Copper coil (200 turns)
Copper coil (200 turns)
₹180
What is it?
A coil of insulated copper wire wound on a hollow core. When a magnet moves in or near it, the changing magnetic flux induces a voltage across its ends. More turns give a larger voltage.
Specifications
Winding
Enamelled (insulated) copper wire
Turns
200
Wire gauge
26 SWG (about 0.46 mm)
Core
Hollow, 3 cm inner diameter
Terminals
2 binding posts on a wooden base
Bar magnet
Bar magnet
₹90
What is it?
A permanent bar magnet with a north and a south pole. Moving it relative to the coil changes the magnetic flux through the coil, which is what induces the current.
Specifications
Type
Permanent bar magnet (alnico)
Size
75 mm × 12 mm × 6 mm
Poles
N and S marked in colour
Care
Keep away from phones, cards and watches
Galvanometer
Galvanometer
₹350
What is it?
A sensitive meter that detects very small electric currents and shows their direction. Its centre-zero scale lets the needle swing left or right, so you can tell which way the current flows.
Specifications
Type
Moving-coil, centre-zero
Scale
30-0-30 divisions
Detects
Currents in the microampere range
Terminals
2 screw terminals (red and black)
Case
Plastic, about 10 cm × 10 cm
Small LED bulb
Small LED bulb
₹25
What is it?
Two small LEDs wired in opposite directions in one holder. It lights up when a small induced current flows, in either direction, so you can see the current without reading the meter.
Specifications
Type
2 LEDs in opposite directions (anti-parallel)
Lights up for
Current in either direction
Holder
Plastic holder with 2 terminals
Handling
Hold by the holder, not the leads
Connecting wires
Connecting wires
₹60
What is it?
Insulated copper wires with crocodile clips at both ends. They join the coil, galvanometer and bulb into one closed circuit.
Specifications
Quantity
3 wires
Length
50 cm each
Conductor
Stranded copper
Ends
Crocodile clips
Insulation
PVC

Tick items as you collect them. Tap + to see the product, specifications and buy options.

Stay safe

Keep wire ends and joints covered with tape.
Keep the magnet away from phones, cards and watches.
Do the experiment under a teacher's supervision.

Steps

0 of 6 steps done

1Connect the coil, galvanometer and bulb in one closed circuit with the wires. Do not add a battery.
Safety
Tighten the terminals and cover bare wire ends with tape.
2Hold the magnet still near the coil. Watch the needle and the bulb.
Observation
Nothing happens. The needle stays at zero and the bulb stays off, because the flux through the coil is not changing.
3Push the magnet quickly into the coil. Note how far the needle moves and how bright the bulb glows.
Observation
The needle swings sharply to one side and the bulb glows bright.
Safety
Do not slam the magnet against the coil base. Keep your fingers clear.
4Now move the magnet slowly into the coil. Note the needle and the bulb again.
Observation
The needle moves only a little and the bulb glows dim.
5Pull the magnet out of the coil and watch the direction of the needle.
Observation
The needle swings briefly the opposite way and the bulb flickers.
6Fill in your observation table.

Tap + on a step to see what you will observe and any safety tips.

Record your observations

Magnet movement	Needle	Bulb
At rest	Zero	Off
Fast, going in	Large deflection	Bright glow
Slow, going in	Small deflection	Dim glow
Coming out	Opposite direction	Flickers

Tap a highlighted cell to write your own observation.

Result and conclusion

When the magnetic flux through a coil changes, an emf (voltage) is induced in the coil. The faster the flux changes, the larger the emf.

ε = −N · dΦ/dt

Observation	What it means
Magnet at rest	Flux is not changing, so emf is zero
Fast movement	Flux changes quickly, so emf is larger
Slow movement	Flux changes slowly, so emf is smaller
Magnet coming out	Flux decreases, so current flows the other way

Needle deflection vs magnet speed

Sample readings. Replace with your own results.

Experiment photos

Before the experimentDuring the experimentResult