Question

a uniform wire of resistance 9 ohm is cut into 3 equal parts . these are connected in to form a equilateral triangle ABC . a cell of EMF 2 volt and negligible resistance is connected across BC . potential difference across B C is
1 volt
2 volt
3 volt
0.5 world ​

Answer 1

answered is three ok

Answer 2

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♦ A uniform wire of resistance 9 ohm is cut into 3 equal parts . these are connected in to form a equilateral triangle ABC . a cell of EMF 2 volt and negligible resistance is connected across BC . potential difference across BC is :-

• 1 volt
• 2 volt
• 3 volt
• 0.5 world

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☑ 1 volt

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$= > r \: = \dfrac{3 \times (3 + 3)}{3 + (3 + 3)}$

$= > i = \dfrac{2}{2} = 1a$

$= > i \: 1 = 1 \times ( \dfrac{3}{3 + 6} ) = \dfrac{1}{3a}$

$= > ab = \frac{1}{3} \times 3 = 1$

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