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

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

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Correct Answer: Option B

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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