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ELECTROMAGNET, U-SHAPED Deluxe Model- with thicker soft iron U-core (0292)
Comprising iron U-shaped core of circular section with armature and carrying hook. Armatures on both the arms wound with enameled copper wire and are joined in series. Provided with a terminals for connections. For use on 4-6 volts DC
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ELECTROMAGNET, U-SHAPED Very powerful, advanced model, with bigger coil and thick soft iron core (0292)
Comprising iron U-shaped core of circular section with armature and carrying hook. Armatures on both the arms wound with enameled copper wire and are joined in series. Provided with a terminals for connections. For use on 4-6 volts DC
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ELECTROMAGNET (0293)
Demonstrates how electric current can be used to generate very strong magnetic fields. This two-part, dissectible
electromagnet comprises a core and a yoke, with their mating surfaces precisely machined to very close tolerances. The core has a cylindrical coil wound with enameled copper wire on annular insulated bobbin, with both ends of winding terminating in crocodile clips. Back of the core has a cell holder that can be connected to coil using crocodile clips. Both core and yoke provided with steel eye-bolts. Generates tremendous lifting power.
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MAGNETIZING AND DEMAGNETIZING COIL (0294)
Low voltage, suitable for magnetizing and demagnetizing ordinary magnets, iron bars, strips etc. Comprises a solenoid wound with insulated copper wire and mounted on a base, complete with switch and 4mm terminals. Solenoid - 250mm long x 35mm internal diameter. Operating Voltage - 12V AC or DC at 6A Magnetizing by AC or DC Demagnetizing by AC only
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FORCE ON A CONDUCTOR BALANCE (0295)
For demonstrating the dependence of force experienced by a current carrying conductor, when placed in magnetic field, on magnetic field strength and magnitude of current flowing through the conductor. Comprises a metal wire arms formed into rectangular L-Ioop with its both ends supported in an insulated balance beam. The beam in turn is supported on top of a pair of metal pillars through conical bearings functioning as fulcrum. Balance beam has two screwed masses - one horizontal for adjusting equilibrium position of suspension arms, other vertical for adjusting sensitivity. One arm has a rider sliding along a scale graduated 0 to 75 x 1 mm for adjusting equilibrium with the current flowing. The L-shaped bend at the end of arms oscillates vertically in magnetic field provided by permanent magnets that can slide to adjust the length of arm in magnetic field. Each pillar provided with a hole for accommodating 4mm plugs for electrical connections. Complete assembly mounted on a base.
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OERSTED'S LAW APPARATUS (0296)
To show the effect of electric current on a magnet. Comprises a cobalt steel magnetic needle, about 75mm long, with agate bearing supported on pivot mounted on insulated pillar on base and surrounded by a rectangular frame of non-magnetic metal strip. Frame fitted with terminals for electrical connections. Passing the current through non magnetic frame causes magnetic needle to deflect as per Oersted's Law
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TANGENT GALVANOMETER (0297)
Comprises a circular coil wound on non-magnetic bobbin of bakelite about 160mm in diameter mounted vertically on a non-magnetic, cast metal base, with the coil width very small as compared to its diameter. A compass box (magnetometer) is located at the center of the coil to make its needle experience uniform magnetic field due to current in the coil. The coil consists of three windings of enameled copper wire of different thicknesses - one each of 2, 50 and 500 turns. A circular platform on base carries a set of four socket terminal for connection to the coils and are marked for each coil.
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TANGENT GALVANOMETER, SIMPLE (0298)
Comprises a coil, with tappings at 5 and 10 turns, wound from enameled copper wire on insulated plastic ring and supported vertically in a plastic stand. The stand has a set of three terminals at one side for electrical connection and a rectangular horizontal platform on top supporting a magnetic compass.
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PRIMARY ANO SECONOARY COILS (0299)
For exploring the concept of electromagnetic induction. Comprises two coils - primary coil wound from thicker gauge enameled copper wire with lesser number of turns; and secondary coil wound from thinner gauge, fine enameled copper wire with more number of turns. Both coils wound on a insulated plastic former and fitted with 4mm sockets. Primary slides into secondary for electromagnetic coupling. Includes soft iron cylindrical core that slides into primary.
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INDUCED CURRENT APPARATUS (0300)
Consisting of primary enameled copper wire wound on insulated former with terminals, which slides inside secondary coil of thinner gauge copper wire mounted on a base with 4mm terminals. A soft iron core fits inside the primary.
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BARLOW'S WHEEL (0301)
For demonstrating the conversion of electric energy into mechanical energy. Comprises a toothed copper disc about Bcm diameter, capable of rotating vertically on pair of adjustable bearings at its each side. The disc dips into mercury trough positioned between the two arms of a small horseshoe magnet. Disc holding clamp is adjustable vertically on metal support rod, which is connected to a terminal for electrical connections. Other terminal provided for connecting to the mercury trough. With the height of disc properly adjusted, the pointed teeth of disc dips just enough to make electrical contact with the mercury and experiences a force when current flows through it. The apparatus operates on 4-6volts. Supplied without battery.
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APPARATUS TO SHOW FORCE ON A CONDUCTOR IN MAGNETIC FIELD (0302)
Demonstrates the force experienced by a current carrying conductor when placed in magnetic field. Comprises a pair of brass rails mounted parallel to each other on a metal base, each rail having 4mm socket terminal at their one end for electrical connection. A strong U-shaped magnet fixed on the base such that its one pole is vertically above the rails and other below it and is positioned between the two rails. A brass axle with plastic discs at its both ends is free to roll along the rails and completes the electrical connection between them. When the current is made to flow through the rails with the axle placed on the rails between the poles of the magnet, the axle is repelled and rolls along the rails away from the center of the magnetic field.
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WESTMINSTER ELECTROMAGNETIC KIT (0303)
A comprehensive kit designed to contain all the necessary components for exploring concepts of electromagnetism, such as various types of magnets and their different arrangements and properties, working of motors, dynamos, vibrators and meters, principle of transformers, eddy current and damping etc. standard pack sufficient for 8 students. The complete kit includes ? Anisotropic Alloy Magnets ? Anisotropic Ceramic Ferrite Magnets ? Steel Magnet Yokes Plotting Compasses ? Hardboard Formers for Compasses ? Iron Filing ? Iron Filing Dispensers ? Pair of C-Cores ? C-Cores Clips ? Aluminium Rings ? Aluminium Rings, Split ? Support Bases. ? Armature with Axle Tubes ? Split Pins ? Rivets ? Axle Shafts ? Latex Rubber Tubing ? Wooden Former for Coils ? CelioTape Roles ? PVC Insulated Wire, 26SWG ? White Paste Board Sheets H5? Plain Postcard Sheets ? White Cotton Thread ? Carbon Resistances, 1000 and 1 DO, O. 5W each ? MES Bulbs ? Neon Bulbs ? MES Lamp Holder ? Wooden Clamp and Wooden Block -1 each.
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FRICTION RODS FOR ELECTROSTATICS (0304)
Rods of different materials, useful in the study of electrostatics by charging through rubbing by a suitable material. Lengths of all rods about 30cm with their diameters about 12-13mm.
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FRICTION RODS FOR ELECTROSTATICS Nylon (0304)
Rods of different materials, useful in the study of electrostatics by charging through rubbing by a suitable material. Lengths of all rods about 30cm with their diameters about 12-13mm.
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