A 6 V battery (no internal resistance) is connected to three resistors in series. The p.d.s across two of them are 1.2 V and 2.8 V. The p.d. across the third is:

  1. 20 V
  2. 2 V
  3. 4 V
  4. 1 V
Answer

B) 2 V

Kirchhoff's second law: sum V = mathcalE Rightarrow V3 = 6 - 1.2 - 2.8 = 2 V. SLO P-09-E-19 · Understanding

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