A standard cell of e.m.f. 1.08 V balances at 54 cm on a potentiometer wire. Another cell balances at 75 cm. Its e.m.f. is:

  1. 0.75 V
  2. 3 V
  3. 1.5 V
  4. 0.778 V
Answer

C) 1.5 V

mathcalE2mathcalE1 = l2l1 Rightarrow mathcalE2 = 1.08 7554 = 1.5 V. SLO P-09-E-23 · Application

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