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JAMB Physics 1997 Question 43

Question 43

Current Electricity

In a metre bridge experiment, two resistors 2 Ω and 3 Ω occupy the left and right gaps respectively. Find the balance point from the left side of the bridge.

  1. A.20 cm
  2. B.40 cm
  3. C.60 cm
  4. D.80 cm
Show the answer and explanation

Answer: B (40 cm)

Explanation

At balance 2/3 = l/(100 − l), so 3l = 200 − 2l and l = 40 cm.