JEE Mains · Physics · STD 12 - 3. current electricity
Current measured by the ammeter \((A)\) in the reported circuit when no current flows through \(10\,\Omega\) resistance. will be________\(A\)
- A \(10\)
- B \(9\)
- C \(11\)
- D \(8\)
Answer & Solution
Correct Answer
(A) \(10\)
Step-by-step Solution
Detailed explanation
Using the condition of a balanced wheat stone bridge, \(\Rightarrow \frac{ R }{3}=\frac{4}{6} \Rightarrow R =2\,\Omega\) So the effective resistance of the circuit is \(R _{\text {eq }}=\frac{6 \times 9}{6+9}=\frac{18}{5}\,\Omega\) \(i=\frac{36}{R_{e q}}=10\,A\)
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