In a meter bridge experiment, two resistor 2\(\Omega\) and 3\(\Omega\) occupy the left and right...

PHYSICS
JAMB 1997

In a meter bridge experiment, two resistor 2\(\Omega\) and 3\(\Omega\) occupy the left and right gaps respectively. Find the balance point from the left side of the bridge

  • A. 20cm
  • B. 40cm
  • C. 60cm
  • D. 80cm

Correct Answer: B. 40cm

Explanation

Let the point be x

\(\frac{2}{x}\) = \(\frac{3}{100 - x}\)

making x subject of formula,

2(100 - x) = 3x

200 - 2x = 3x

200 = 3x + 2x

200 = 5x

divide both side by 5

x = 40cm



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