Potentiometer
The potentiometer is an
instrument used for the measurement of potential difference. It consist of a
ten meter long uniform wire of manganin or constantan stretched in ten
segments, each of one meter length. The segments are stretched parallel to each
other on a horizontal wooden board. The ends of the wire are fixed to copper
strips with binding screws. A meter scale is fixed on the board, parallel to the
wire. Electrical contact with wires is established by pressing the jockey.
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