A simple form of D.C. motor with 2 pole armature wound with insulated copper wire and a permanent magnetic field provided by a removable bar magnet, with a commutator and phosphor bronze brushes connected to 4 mm sockets, open construction, all parts visible.

Plastic strip 75 x 25 x 8 mm, with two 6.5 mm holes, fitted with two knurled head screws. Supplied complete with 2 crocodile clips and two 300 mm long PVC covered wires.

Economical and compact design to observe the electrolysis of water and collect small volumes of hydrogen and oxygen gases. Consists of a stand assembly, electrodes, 2 attached wires with alligator clips, 2 test tubes, and trough. Requires a 6- or 9-V battery (not included). Supplied without solutions. With instructions.

Mounted on a plastic box. Working on 6 – 9 V DC. Demonstrates change in strength of magnet with change in voltage.

Electromagnetic Induction Demonstrator kit is used for demonstrating the important experiments performed by Faraday and how they lead to some of the significant conclusions in electromagnetism. It is designed to perform studies even beyond the basic experiments. It comprises of three solenoids of 20, 40 and 80 turns, each of identical cross section, mounted on a transparent base along with a milliammeter. These three coils of different lengths are provided to understand the effect of length of coil on induced current. Repeatedly inserting a magnet into the coil and removing it causes electric current to flow through the coil, which can be read directly from the milliammeter. Also notice that the milliammeter shows zero current when the magnet is not moving. Using this apparatus, students can study correlations between induced current to that of magnetic field strength, number of turns of coil, magnetic field polarity and speed. Requires 1.5 V dry cell battery (not included)