PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo1. In a meter bridge experiment null point is obtained at \(20\ cm\) from one end of the wire when resistance \(X\) is balanced against another resistance \(Y\). If \(X\ <\ Y\), then where will be the new position of the null point from the same end, if one decides to balance a resistance of \(4X\) against \(Y\):
2. In a potentiometer experiment the balancing with a cell is at length \(240\ cm\). On shunting the cell with a resistance of \(2\ \Omega\), the balancing length becomes \(120\ cm\). The internal resistance of the coil is:
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