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Principle
Current-carrying coils have a magnetic field around them which resembles that of a bar magnet. Inside the coil, the magnetic field lines are parallel to the axis of the coil. The direction of the field depends on the direction of the current in the coil. The magneti ...
This experiment demonstrates the force on a closed conductor in which current is being induced. Using DC in the primary coil, there is a pulse as the power is turned on and the coil is forced away. Using AC, the coil hovers over the primary coil.
When electrical energy is transmitted over long distances, it is unavoidable that there will be losses due to resistance in the lines. Using transformer stations and high-voltage transmission lines can drastically reduce such losses. To model such lines, two wires o ...
A gas discharge tube is connected to a vacuum pump. Applying a high voltage causes a variety of light phenomena in the tube, which are dependent on the pressure at that moment. The 0...10-kV high-voltage power supply used here (13670-93) is particularly appropriate ...
A sensitive moving coil galvanometer only has a very small measuring range when it is used directly as a voltmeter. With the aid of this educationally designed instrument, the measuring range can be extended by means of resistors connected in series in front of it.< ...
This galvanometer kit can be used to demonstrate to students the principle design features and functioning of a galvanometer.
If a current-carrying conductor is inside a magnetic field produced by a magnet, then there will be an interaction between the two magnetic fields, whereby both the magnet and the conductor will exert forces on one another.
Students will construct various different motor designs using the motor model kit. Using a bar magnet on the model turns it into a DC motor with a direction of rotation dependent on the direction of the current. If an electromagnet is used for the stator field, as s ...
The students apply their knowledge of electrostatic induction to the electroscope. They recognize why a pointer deflection can appear even as a charged object approaches the electroscope. They can explain the series of events in the electroscope.
The Lorentz force acting on a straight conductor in a magnetic field is proportional to the current and to the length of the conductor. The direction of the force is determined by the direction of the current and the direction of the magnetic field (right-ha ...
Magnetism is a phenomenon that can be attributed to electromagnetic interaction. It manifests itself through the force that acts on magnetisable material and moving electric charges. The force is hereby conveyed via a magnetic field. Measurement is ma ...
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