Current Electricity - Result Question 11

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12. A 6 volt battery is connected to the terminals of the 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[2004]

======= ####12. A 6 volt battery is connected to the terminals of the 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[2004]

3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed:content/english/neet-pyq-chapterwise/physics/current-electricity/current-electricity—result-question-11.md (a) 1.5 volt

(b) 3 volt

(c) 3 volt

(d) 1 volt

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Answer:

Correct Answer: 12. (d)

Solution:

(d) $R \propto \ell$

For $300 cm, R=100 \Omega$

For $50 cm, R^{\prime}=\frac{100}{300} \times 50=\frac{50}{3} \Omega$

$\therefore IR=6$

$\Rightarrow I R^{\prime}=\frac{6}{R} \times R^{\prime}=\frac{6}{100} \times \frac{50}{3}=1$ volt.