Physics

Physics experiments on induction and alternating current

Experiments on the interaction of magnetism and electricity for 6 learning groups

With these high-quality materials, students from grade 9 onwards can carry out important experiments on the topic of induction and alternating voltage themselves. Motivated by captivating examples from everyday life, they safely work out with this class set how magnetism and electricity interact. For example, what happens in a coil when electricity flows through it? How do the magnetic fields around a current-carrying conductor and a coil differ?

 

Special features

- All student experiments are developed according to safety regulations: current limit < 3 A, voltage up to 12 V, output voltage at the transformer up to 4 V AC

- The U-I core is available six times in the class set for parallel work by the learning groups.

- The completeness of the experiment materials can be checked at a glance.

Tip: For the self-induction experiment, you also need some parts that are not included in the 54075 class set (see accessories). Alternatively, you can find all these small parts in the supplementary set 54076.

The picture shows a red case containing a variety of experimental materials. The equipment includes various measuring devices and accessories intended for use in education.
The picture shows a red case containing a variety of experimental materials. The equipment includes various measuring devices and accessories intended for use in education.
The picture shows a red suitcase equipped with various experimental materials for teaching electricity. Next to the materials is a manual entitled &quot;Electricity 2.0&quot;, which contains instructions and information for using the parts.
The picture shows a teaching material called &quot;Electricity 2.0&quot;, which deals with the topics of induction and alternating current. It also shows a boy working with experimental equipment to research electrical phenomena.
The picture shows two students experimenting at a table and using a smartphone to observe an experiment. Next to them are measuring instruments and a construction with coils used for a technical or physical investigation.
The picture shows a set of experimental supplies stored in a foam tray. The items shown include a compass, a spirit level and various measuring instruments.
The picture shows a device with a plaque containing technical specifications for electrical experiments. It is housed in a foam-padded container, presumably intended for safe transport and storage.
The picture shows a tool and experiment box containing various equipment and materials for school experiments. These include gray plates, clips, a compass and other utensils organized in a foam insert.
The picture shows a set of experimental materials arranged in a foam-padded container. It contains various components such as spring contacts, wires and components with labels that indicate different values.
The picture shows instructions for a physics experiment in which the magnetic field of a coil is investigated. An electric current is passed through the coil while the influence of the earth&#39;s magnetic field is discussed.
The picture shows an arrangement of experimental materials that can be used for a physics lesson. Among other things, you can see a spiral, various connecting elements and a grey case, together with a teaching manual.
The picture shows an experimental device with a spiral spring and an LED on a gray base connected by colored wires. This arrangement is intended for illustrating electrical circuits and experiments in educational settings.
The picture shows instructions for an experiment on electromagnetic induction, which examines the relationship between permanent magnets and a coil in four sub-experiments. Materials such as coils and magnets that are required for the experiment are listed.
The picture shows several coils with different winding numbers (300, 600, 1200 turns) as well as two stones with red markings that probably serve as magnets. Instructions on induction and alternating current are also visible and are part of the experiment set.
The picture shows a hand holding two magnets in a device while a galvanometer is ready to measure electrical parameters. The components are designed for physics experiments in the educational field.
The picture shows a boy working concentratedly on an experimental device while being assisted by another person. The device is connected to colorful cables used for scientific experiments.
The image shows instructions for an experiment to generate alternating current using a rotating permanent magnet in front of a coil. It contains information on the materials and how to carry out the experiment to explore basic physics concepts.
The picture shows various experimental materials for demonstrating induction and alternating current, including a coil, a magnet and a control unit. Alongside these materials is a manual containing explanatory diagrams and information.
The picture shows an experimental device with a coil, a switch and a galvanometer that is used to measure electrical currents. The arrangement is probably intended to demonstrate electromagnetic effects in educational settings.

item number 54075

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In the accompanying material

- The teacher's manual is didactically prepared and suitable for immediate use.

- All student worksheets are available as editable Word versions for free download.

- The experiments are enriched with a list of materials, instructions for carrying them out, evaluation and tips for you as a teacher. QR codes for internal differentiation, hint boxes, formula support and many 3D illustrations offer individual help to the learners.

 

Topics that are additionally covered

- Magnetic fields of current-carrying conductors and coils

- Induction in coils

- Generator

- Transformer

- Lenz's rule

- Delayed switch-on process with parallel connection of L and R, switch-on and switch-off processes with coils

- Impedance

A compass is used to study the magnetic field of a coil with 8 turns caused by an electric current (2 A).
The evaluation also addresses the influence of the Earth's magnetic field on the observation.


The influence of the coil parameters winding number, current and permeability on the strength of the magnetic field is qualitatively investigated. The strength of the magnetic field is assessed according to how strongly an iron sheet strip is attracted to the upper end of an I-core located in the coil.


In four small sub-experiments, it is investigated how the highest possible voltage can be induced with permanent magnets and a coil.
The amount of the voltage is determined by the deflection of a electroplating or multimeter directly connected to the coil.


A rotatable permanent magnet is rotated in front of a coil. The AC voltage generated in the coil is supplied with a galvanometer directly connected to the coil.


In an unloaded transformer, primary and secondary voltage are measured with two multimeters.
In the evaluation, the legal relationship between the measured voltages and the number of turns of the coils is independently discovered.


A compass is used to study the magnetic field of a copper wire caused by an electric current. In addition to the classical findings from the Ørsted experiment, the disturbing influence of the Earth's magnetic field on this experiment is also addressed.


A bar magnet is quickly moved into a free-hanging aluminum ring. Subsequently, the observations are traced back to the law of induction and Lenz's rule.


The influence of a coil on the switch-on and switch-off process is observed in simple circuits of switches, lamps and LEDs.


With a function generator, the inductance with and without iron core is indirectly determined via a measuring resistor.


  • 6 × Crocodile clip, bare
  • 2 × Copper wire, supple 1,5mm(450 mm long)
  • 1 × Sewing thread, 100 m
  • 18 × Magnet rod, AlNiCo, 23 mmwith red-marked northpole
  • 6 ×
  • 6 ×
  • 6 ×
  • 1 ×
  • 1 ×
  • 1 × Welding strips, 10 pcs.
  • 6 × Electrode support on plug
  • 6 × Magnet bar/brass bearing AlNiCo, 72 x 60 x 6 mm
  • 1 × Bulb, MES, 4 V/1 A clear set of 10 pcs.
  • 1 × Plastic case ca.540x450x150 mm
  • 12 × Crocodile clip with 4 mm plug
  • 6 × Short circuit ring, 40 mm
  • 6 × Needle support with plug
  • 6 × Coil with 1200 turns student type
  • 6 × Coil with 600 turns student type
  • 6 × U-and I-core with clamp screw, student type
  • 6 ×
  • 1 ×
  • 6 ×

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