School Physics Electromagnetism Lab

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SCIENCE, Class X, Chapter - 13, Magnetic effects of electric current.

It consists of a hand driven pulley attached to the pulley of dynamo by means of a rubber belt. It generates both a.c & d.c current. The whole unit is mounted on a plastic base. Provided with two pairs of 4mm sockets. Supplied with two nos. of LEDs. 

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Ideal for demonstration of magnetizing or demagnetizing iron bar or strips etc. It consists of a solenoid mounted on a plastic base with switch and 4mm sockets.

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Experiments:

• Exp-1 Verification of Faraday and Lenz's law of induction by measuring the induced voltage as function of time.
• Exp2 Measurement of the induced voltage impulse as a functionof the velocity of the magnet.
• Exp-3 Calculation of the magnetic flux induced by the falling magnet as a function of the velocity of the magnet.

Salient Features :

• Multipurpose data logger.
• Easy setup with advanced software features.
• Microcontroller based digital timer.

Principle and Working:An induced e.m.f. (or induced current) is produced across a conductor when it is exposed to a change in a magnetic field. The mathematical law that relates the changing magnetic field to the induced current (or the induced voltage) is called Faraday's Law. Lenz’s law describes the magnetic flux through the circuit and gives the direction of the induced e.m.f. This gives rise to induced current which opposes the change in magnetic flux .
In the present setup, a permanent magnet falls with different velocities through a coil. The change in the magnetic flux generates an induced voltage impulse. The induced voltage impulse is recorded with voltage probe through Data Logger. Depending on the polarity of the permanent magnet the induced voltage impulse is negative or positive.

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Experiments :

• Exp-1 To study the working of step-down transformer.
• Exp-2 To study the working of step-up transformer.
• Exp-3 To demonstrate motor and braking.
• Exp-4 Effect of eddy current.
• Exp-5 Principles of the shaded pol motor.
• PHYSICS, Class XII, Part-1, Chapter -6, Electromagnetic induction.
• Chapter -7, Alternating Current. 

In order to demonstrate the basic principles of the A.C. Transformer and also the basics of various experiments in electromagnetism by means of different coils & cores using direct or alternating current, this apparatus is constructed. Coils are made of enamelled copper wire wound around on plastic bobbins with 4mm terminals connections.

All the components fit together to allow for assembly of the arrangements required to demonstrate motor & braking effects on the dissectible transformer. 

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Experiments :

• Exp-1 Magnetic field lines of a bar magnet.
• Exp-2 Magnetic field lines of Horse shoe magnet.
• Exp-3 Magnetic field lines of U-magnet.
• Exp-4 Working of Tangential Galvanometer.
• Exp-5 To determine the value of 'H' (Horizontal component of earth field)
• PHYSICS, Class XII, Part - 1, Chapter -5, Magnetism & matter.
• SCIENCE, Class X, Chapter - 13, Magnetic effects of electric current.

Kit for magnetism experiments is designed for demonstrating the basic experiments of magnetism and is very useful for classroom demonstration purpose.

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Experiments :

• Exp-1 To measure the magnetic flux density along the x-axis of the circular coils when the distance between them a = R (R = radius of the coils) and when it is greater and less than this.
• Exp-2 To measure the spatial distribution of the magnetic flux density when the distance between coils a = R, using the rotational symmetry of the set-up.
• PHYSICS, Class XII, Part - 1, Chapter - 4, Moving Charges & magnetism.

Special Features :

• Magnetic filed measure in boh the direction.
• Distance between coil is adjusted in U channel bench.
• Modular approach.
• Electrical safety tested for Power supply & Gaussmeter.

Principle and Working:
The magnetic field of the coil arrangement is rotationally symmetrical about the axis of the coils, which is chosen as the x-axis of a system of cylindrical coordinates (x, r, Φ). The origin is at the centre of the system. The magnetic flux density does not depend on the angle Φ, so only the components Bx (x, r) and Br (x, r) are measured.

In the present setup, a fairly uniform magnetic field is to use a pair of circular coils on a common axis with equal currents flowing in the same logic. For a given coil radius, you can calculate the separation needed to give the most uniform central field.

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Experiments :

• Exp-1 Verifying the Lenz’s law.
• Exp-2 Induce current in ring.
• Exp-3 To generate the electric current (lighting a bulb).
• Exp-3 Effect of aluminum slit and acrylic ring .
• PHYSICS, Class XII, Part - 1, Chapter -6, Electromagnetic induction.
• Chapter -7, Alternating Current.

Ring Launcher demonstrates the Lenz's law and effects of electromagnetically induced currents.

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Suitable for demonstration of a DC motor, having a two pole armature wound with enamelled copper wire and a detachable permanent magnet (N-S indicated) mounted on a base.

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Experiments :

• Exp-1 Magnet has a force.
• Exp-2Some item are attracted by a magnet, some are not.
• Exp-3Magnetic Poles
• Exp-4Magnetic Force pass through materials.
• Exp-5The rule of pole.
• Exp-6Attraction and repulsion of poles.
• Exp-7Compass construction.
• Exp-8North -South Orientation of compass needle.
• Exp-9North south direction by freely movable magnet.
• Exp-10Compass needle is magnet.
• Exp-11North south Position of compass needle.
• Exp-12Magnetisation of knitting needle.
• Exp-13Knitting needle as a compass needle.
• Exp-14Utilization of compass.
• Exp-15Use of a hiking compass with a map.
• SCIENCE, Class VIII, Chapter - 11, Electricity & magnetism.
• SCIENCE, Class X, Chapter - 13, Magnetic effects of electric current.

Principle and Working:
The magnetic field along the axis of coils of different dimensions is measured with a digital gauss meter with axial probe.
In the present setup, the relationship between the maximum field strength and different point on the axis of a single coil with different dimensions are investigated and a comparison is made between the measured and the theoretical effects of position.

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Experiments :

• Exp-1 To study Biot-Savart’s law.
• Exp-2 To study the magnetic field along the axis (at different point on the axis) of a single coil.
• Exp-3 To study the dependancy of magnetic field on coil diameter and number of turns.
• PHYSICS, Class XII, Part - 1, Chapter - 4, Moving Charges & Magnetism, the solenoid.

Special Features :

• Modular approach.
• Multipurpse power supply and gauss meter.
• Different types of circular coil.
• Electrical safety tested for power supply and gauss meter.

Principle and Working:
The magnetic field along the axis of coils of different dimensions is measured with a digital gauss meter with axial probe.
In the present setup, the relationship between the maximum field strength and different point on the axis of a single coil with different dimensions are investigated and a comparison is made between the measured and the theoretical effects of position.

Scope of Supply:

Product Details:

Experiments :

• Exp-1 Magnetic properties: attraction & repulsion.
• Exp-2 Magnetic meridian.
• Exp-3 Magnetic field due to different arrangements of magnet.
• Exp-4 Field from electric current.
• Exp-5 Electromagnetic induction.
• Exp-6 Current in magnetic field.
• Exp-7 Alternating current.
• Exp-8 Eddy currents and damping.
• Exp-9 Transfer of electrical energy to mechanical energy.
• PHYSICS, Class XII, Part - 1, Chapter - 5, Magnetism & matter.
• Chapter - 6, Electromagnetic Induction.

This Kit designed to perform the basic experiments in Electromagnetism. A group of 8 students can perform an experiment in classroom.

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