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JEE Mains · Physics · STD 12 - 3. current electricity

\(10\,\Omega \) અવરોધ સાથે જોડેલ આદર્શ વોલ્ટમીટર \(2\, V\) માપે તો દરેક બેટરીનો આંતરિક અવરોધ \(r\) કેટલા .................. \(\Omega\) હશે?

  1. A \(1\)
  2. B \(0.5\)
  3. C \(1.5\)
  4. D \(0\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(0.5\)

Step-by-step Solution

Detailed explanation

\(R_{e q}=\frac{15 \times 10}{25}+2+2 r \) \(=8+2 r \) \(i=\frac{3}{8+2 r}\) \(2=\mathrm{i} \mathrm{R}_{\mathrm{eq}}=\frac{3}{8+2 \mathrm{r}} \times 6\) \(16+4 r=18\) \(\Rightarrow r=0.5\, \Omega\)
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