Looking for classes? Ksquare Career Institute, Bengaluru →
Current Electricity
Potential Drop along a Uniform Wire
1 question from 1 paper, each with its answer.
- question
- 1
- paper
- 1
- of Current Electricity
- 0.77%
Concepts tested
- Potential gradient along a uniform wire
All Questions
2004 AIPMT 1 question
-
A 6 volt battery is connected to the terminals of a three metre long wire of uniform thickness and resistance of 100 ohm. The difference of potential between two points on the wire separated by a distance of 50 cm will be :-The wire is uniform, so the potential drops uniformly along its length (we take the battery to have negligible internal resistance).
Potential gradient $= \dfrac{6\ \text{V}}{300\ \text{cm}} = \dfrac{1}{50}$ V/cm
Voltage across 50 cm $= \dfrac{6}{300} \times 50 = 1$ volt
So the potential difference between two points 50 cm apart is 1 V.