Question

The lenght of the wire of the potentiometer is 10 meters. what will be the value of the voltage gradient whan 2 volts electromotive force is applied at its ends?​

Answer 1

Explanation:

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Answer 2

Given:

length of the wire d = 10 m

electromotive force V = 2V

To find:

voltage gradient E =?

Explanation:

• A voltage gradient is a difference between electrical potential across a distance or space.

• Voltage Gradient(VG) is the electrical potential difference between two points separated by a fixed distance.

• The unit of voltage is volt and the unit of distance is meter. So the unit of voltage gradient is V/m.

        By Lenz's law,

       $\displaystyle E = \frac{v}{d}$

       where

       E = voltage gradient

       v = electromotive force

       d = distance between two points

• Put given values in the above equation

      $\displaystyle E = \frac{2}{10}$

      E = 0.2 V/m

The value of the voltage gradient is 0.2V/m.