What is balance point in potentiometer?

In the potentiometer, the balancing point is the point on the slide wire where the galvanometer display zero deflection.
  • The balance point is identified to determine the unknown EMF of the cell.
  • In a potentiometer the balance point is determined when the potential difference between positive end to the jockey is equal to the EMF of experimental cell.

Related Questions

  1. Sensitivity of potentiometer can be increased by___________
  2. How does a potentiometer measure EMF?

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CBSE CLASS XII Related Questions

  • 1.
    If both the number of protons and the neutrons are conserved in each nuclear reaction, in what way is mass converted into energy (or vice versa) in a nuclear reaction? Explain.


      • 2.
        If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.


          • 3.
            A light copper ring is freely suspended by a light string. A bar magnet is held horizontally with its length along the axis of the ring. The magnet is moved towards the ring with its N pole facing the loop. What will happen to the ring and its position? Explain.


              • 4.
                A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:

                  • 5 V
                  • 3.5 V
                  • 2.5 V
                  • Zero V

                • 5.
                  Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.


                    • 6.
                      Assertion (A) : All atoms have a net magnetic moment. Reason (R) : A current loop does not always behave as a magnetic dipole.

                        • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
                        • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
                        • Assertion (A) is true, but Reason (R) is false.
                        • Both Assertion (A) and Reason (R) are false.
                      CBSE CLASS XII Previous Year Papers

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