12th Class Physics Sample Paper Physics Sample Paper-7

  • question_answer What is the advantage of using thick metallic strips to join wires in a potentiometer?


    These metal strips have low resistance and need not be counted in the potentiometer length l of the null point. One measures only their lengths along the straight segments (of lengths 1 m each). This is easily done with the help of centimeter rulings or meter ruler and leads to accurate measurements.

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