A standard cell of e.m.f. 2 V balances at 50 cm on a potentiometer wire. Another cell balances at 35 cm. Its e.m.f. is:

  1. 0.7 V
  2. 2.8 V
  3. 1.4 V
  4. 2.86 V
Answer

C) 1.4 V

mathcalE2mathcalE1 = l2l1 Rightarrow mathcalE2 = 2 3550 = 1.4 V. SLO P-09-E-23 · Application

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