| The vertical position of the axis is fixed in the body 2 with the ring 7 below and the bolt 8 above | |
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| Construction of a wire-wound circular potentiometer | The resistive element 1 of the shown device is trapezoidal, giving a non-linear relationship between resistance and turn angle |
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.
21| , Physics for Scientists and Engineers with Modern Physics | The wiper 3 rotates with the axis 4 , providing the changeable resistance between the wiper contact 6 and the fixed contacts 5 and 9 |
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| , Physics for Scientists and Engineers with Modern Physics |