JEE Mains · Physics · STD 12 - 3. current electricity
A \(9\, V\) battery with internal resistance of \(0.5\,\Omega \) is connected across an infinite network as shown in the figure. All ammeters \(A_1 , A_2, A_3\) and voltmeter \(V\) are ideal. Choose correct statement
- A Reading of \(A_1\) is \(2\,A\)
- B Reading of \(A_1\) is \(18\, A\)
- C Reading of \(V\) is \(9\, V\)
- D Reading of \(V\) is \(7\, V\)
Answer & Solution
Correct Answer
(A) Reading of \(A_1\) is \(2\,A\)
Step-by-step Solution
Detailed explanation
The given circuit can be redrawn as, as \(4\, \Omega\) and \(x \,\Omega\) are parallel \(x^{\prime}=\frac{1}{4}+\frac{1}{x}=\frac{(4+x)}{4 x} \quad x^{\prime}=\frac{4 x}{4+x}\) and \( 1 \,\Omega\) and \(1\, \Omega\) are also in series \(x^{\prime \prime}=2\, \Omega\) Now…
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