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AP EAMCET2013PhysicsCurrent Electricity

In the meter bridge experiment, the length A B of the wire is 1 ~m . The resistors X and Y have values 5 and 2 respectively. When a shunt resistance S is connected to X , the balancing point is found to be 0.625 ~m from A . Then, the resistance of the shunt is

Options

  1. A5
  2. B10
  3. C7.5
  4. D12.5

Correct answer

B. 10

Step-by-step solution

Here in given condition, we have aligned b x b+x 2 & = 0.625 0.375 b x (b+x) 2 & = 25 15 5 b (b+5) 2 & = 5 3 b 2 b+10 & = 1 3 3 b-2 b & =10 b & =10 aligned

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