The resistive element 1 of the shown device is trapezoidal, giving a non-linear relationship between resistance and turn angle | , Physics for Scientists and Engineers with Modern Physics |
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The work W done by the external agent is: Figure 5 |
Construction of a wire-wound circular potentiometer.
The wiper 3 rotates with the axis 4 , providing the changeable resistance between the wiper contact 6 and the fixed contacts 5 and 9 | To move the charge from A to B an external force F of the same magnitude to the electric force but in the opposite direction |
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, Physics for Scientists and Engineers with Modern Physics |
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