Question

nce.
प्रश्न-10
विभवमापी के तार की लम्बाई 10 मी. है। उसके सिरों पर 2 वोल्ट वि.वा. बल
लगाने पर विभव प्रवणता का मान ज्ञात कीजिए।
The length of the wire of the potentiometer is 10 meters. What will
be the value of the voltage gradient when 2 volts electromotive force
is applied at its ends?​

Answer 1

Given:

The length of the wire of the potentiometer is 10 meters.

To find:

Voltage gradient when potential difference of 2 volts is applied?

Calculation:

The voltage gradient (or Potential Gradient) refers to the ratio of the potential difference across the potentiometer wire to the length of the wire.

• In other words, it refers to potential drop per unit length of wire.

• Let voltage gradient be V_(L)

$\rm \therefore \: V_{L} = \dfrac{V}{d}$

$\rm \implies\: V_{L} = \dfrac{2}{10}$

$\rm \implies\: V_{L} = 0.2 \: volt/m$

So, voltage gradient is 0.2 V/m.