Question

Explain Potentiometer ​

Answer 1

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A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

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Answer 2

Definition :

Potentiometer is a device used to compare the E.M.F (electromotive force) of two cells, to measure the internal resistance of a cell, and potential difference across a resistor. It consists of a long wire of uniform cross-sectional area and of 10 m in length.

Types :

Potentiometers can be of 2 types,

• Linear
• Rotary.

Components :

Four main components:

• two fixed terminals,
• one moving terminal (called the wiper),
• a resistive strip or track, and
• the housing.

Formula :

K = V/L , where v = voltage.

Ohm's law Voltage V = I R , where I = circuit.

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