The figure given below shows a circuit when resistances in the two arms of the meter bridge are \(5~\Omega\) and \(R\), respectively. When the resistance \(R\) is shunted with equal resistance, the new balance point is at \(1.6l_1\). The resistance \(R\) is:

1. \(10~\Omega\) 2. \(15~\Omega\)
3. \(20~\Omega\) 4. \(25~\Omega\)
Subtopic:  Meter Bridge |
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From NCERT
AIPMT - 2014
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