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In potentiometer a balance point is obtained, when
  • AThe $e.m.f.$ of the battery becomes equal to the $e.m.f.$ of the experimental cell
  • BThe $p.d.$ of the wire between the $+ve$ end to jockey becomes equal to the $e.m.f.$ of the experimental cell
  • CThe $p.d.$ of the wire between $+ve$ point and jockey becomes equal to the $e.m.f.$ of the battery
  • DThe $p.d.$ across the potentiometer wire becomes equal to the $e.m.f.$ of the battery
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