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  4. When a metal conductor connected to left gap of a meter bridge is heated, the balancing point

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Q. When a metal conductor connected to left gap of a meter bridge is heated, the balancing point

KCETKCET 2022Current Electricity

Solution:

$\frac{ R }{\ell}=\frac{ S }{100-\ell}$
If temperature increases, resistance increases.
As $R$ increases, balancing length also increases. It will shift towards Right