Description

used in step-up and step-down ratio demonstrations of Faraday's law

5A standard rheostat with oxidized constantan winding on a vitreous-enameled steel tube

Fitted with 4 mm socket

this 4-inch carbon-steel needle pivots on a brass cup bearing for low-friction rotation under the local field

supporting both rheostat and potentiometer wiring at high current

Morse Sounder Mechanics_Force & Motion used in step-up and step-downUsed to receive Morse code signals as audible clicks, this electromagnet driven pivoted arm sounder on a wooden base produces the snap of early telegraph operation when current pulses the coil.

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Morse Sounder Mechanics_Force & Motion used in step-up and step-down

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