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In a slide wire bridge, the balance is obtained at a point 25cm from one...

Physics
JAMB 2019

In a slide wire bridge, the balance is obtained at a point 25cm from one end of wire 1m long. The resistance to be tested is connected to that end and a standard resistance of 3.6\(\Omega\) is connected to the other end of the wire. Determine the value of the unknown resistance

  • A. 3.2\(\Omega\)
  • B. 1.4\(\Omega\)
  • C. 3.21\(\Omega\)
  • D. 1.2\(\Omega\)
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Correct Answer: Option D
Explanation

\(\frac{R}{3.6} = \frac{75}{25} = \frac{1}{3}\)

3R = 3.6

R = 1.2\(\Omega\)

There is an explanation video available below.


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Explanation Video

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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