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Paragraph: The following questions are concerned with experiments on the characterization and use of a moving coil galvanometer. The series combination of a variable resistance R , one 100 resistor and a moving coil galvanometer is connected to a mobile phone charger having negligible internal resistance. The zero of the galvanometer lies at the centre and the pointer can move 30 divisions full scale on either side d

Options

  1. A12.5 k .
  2. B25 k .
  3. C75 k .
  4. D100 k .

Correct answer

B. 25 k .

Step-by-step solution

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