1.1 The "Electricity 1" set is intended for basic law demonstrations investigated on the "Direct electric current" theme in a course of physics at secondary school, and for acquaintance of pupils with construction principles of electric circuits and with carrying out of the elementary measurements.
1.2 The set is applied to demonstrate experiments in standard physics classroom conditions at a secondary school, a technical training college or a technical school.
Set details provide an opportunity to assembly an electric circuit at a vertical plane.
The set with the help of molded magnets in the bases demountable modules by the size of 110х110 mm can be mounted at a metal blackboard or at a screen surface made from the static material. Electric circuit elements are installed on each of these modules.
Module plugs for connecting wires are disposed and legends of elements are put at a module face.
Wires with Ж4 mm round unipolar tip or with a flat plug can be used as connecting wires.
Moving a variable resistor toddler or a key blade, a module must be held from travel on a board surface by a free hand.
4. Technical data
Module size for circuit element installation - 110 х 110 mm
Fastening type - Magnetic
Wire resistors, Х20Н80 nichrome wire
Diviation of resistor resistance from face value - ≤ 1 %
Maximum permissible current through 3A wire resistors 3 А
Service life - ≥ 7 years
5. Demonstration experiment list
· Drawing up of an electric circuit.
· Current strength measurement by an ammeter.
· Voltage measurement by a voltmeter.
· Current strength and voltage dependence.
· Current strength and resistance dependence
· Resistance measurements.
· Variable resistor (rheostat).
· Conductor series connection.
· Conductor parallel connection.
· Conductor heating by an electric current.
· Electric current power determination.
· Safety fuse effect.
6. Possible malfunctions and their elimination
There is no contact in a wire connection place
Increase a tip gap of the pin with the help of the 4х0,25 mm plane screw-driver.
Test plug fastening on the board element. Tight a fixing nut with the help of the #7 face key if necessary.
Lamp does not work
Replace the lamp: slightly press into patron, turn it counter-clockwise and take out from the patron. Lamp installation goes in the reverse order.
7. The equipment necessary for operation with the set:
· DC source up to 6А with the 2-15V adjustable voltage
· current and voltage digital instruments package
· connecting wire demonstration package
· demonstration ammeter and voltmeter
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