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In a slide wire bridge, the balance is obtained at…

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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 3.6Ω is connected to the other end of the wire. Determine the value of the unknown resistance

  • A. 3.2Ω
  • B. 1.4Ω
  • C. 3.21Ω
  • D. 1.2Ω
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QUICK ANSWER…

D

DETAILS…

To properly understand and solve this problem, we need to sketch the slide wire bridge as follows:

In a slide wire bridge, the balance is obtained at... » QuizTablet

Very simple!

Now for the right answer to the above question:

  1. Option A is incorrect.
  2. Option B is incorrect.
  3. C is incorrect.
  4. D is the correct answer.

KEY-POINT…

You may please note these/this:

  • A slide wire bridge, also known as meter bridge uses the principle of balance point for a known resistance on the 100cm meter rule to determine the value of an unknown resistance, arranging them as shown in the sketch above.

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/culled from 2019 JAMB-UTME physics question 10/

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