JAMB Physics 1989 Question 36

Question 36

Current Electricity

Three resistors, with substances 250 Ω, 500 Ω and 1 kΩ are connected in series. A 6 V battery is connected to either end of the combination. Calculate the potential difference between the ends of the 250 Ω resistor.

  1. A.0.20 V
  2. B.0.86 V
  3. C.1.71 V
  4. D.3.43 V.
Show the answer and explanation

Answer: B (0.86 V)

Explanation

Total = 1750 Ω, so I = 6/1750 A. V = 250 × 6/1750 ≈ 0.86 V.