What are the two faults in a potentiometer if the balance point is not obtained?

The two faults in a potentiometer if a balance point is not obtained are:

  • The emf of the battery that has to be tested is greater than the standard cell.
  • The common point at the potentiometer wire and the source to be compared must be at the same polarity in order to get the balance point.​

Related Questions

  1. How does a potentiometer measure EMF?
  2. What is balance point in potentiometer?
  3. State the Working Principle of a Potentiometer.
  4. Which Metal Is Used In Potentiometer?
  5. What is a DC Potentiometer?
  6. Sensitivity of potentiometer can be increased by__________.
  7. Why High Resistance Is Used In Potentiometer?
  8. What is a null point in a potentiometer?

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CBSE CLASS XII Related Questions

  • 1.
    Write any two features of nuclear forces.


      • 2.
        Assertion (A) : The mass of a nucleus is less than the sum of the masses of the constituent nucleons. Reason (R) : Energy is absorbed when the nucleons are bound together to form a nucleus.

          • 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.

        • 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.
              The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

                • \( \frac{q}{4 \pi \epsilon_0 l^2} \) pointing along MA
                • \( \frac{q}{\pi \epsilon_0 l^2} \) pointing along AM
                • \( \frac{q}{2 \pi \epsilon_0 l^2} \) pointing along AM
                • Zero

              • 5.
                Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.


                  • 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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