What are two kinds of electricity?

The two kinds of electricity are:


Related Questions

  1. What is balance point in potentiometer?
  2. What is a DC Potentiometer?
  3. Why High Resistance Is Used In Potentiometer?
  4. How is potential gradient measured?
  5. What Is Balancing Length In Potentiometer?

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CBSE CLASS XII Related Questions

  • 1.
    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.


      • 2.
        Two parallel plate capacitors X and Y are connected in series to a 6 V battery. They have the same plate area and same plate separation but capacitor X has air between its plates, whereas capacitor Y contains a material of dielectric constant 4. Calculate the capacitances of X and Y, if the equivalent capacitance of the combination of X and Y is \( 4 \, \mu\text{F} \). Calculate the potential difference across the plates of X and Y.


          • 3.
            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

            • 4.
              Does a step up transformer contradict the principle of conservation of energy? Justify your answer.


                • 5.
                  Two heaters rated as \((P_1,V)\) and \((P_2,V)\) are connected in series across a dc source of \(V/2\) volt. The power consumed by the combination will be –

                    • \((P_1+P_2)\)
                    • \(\dfrac{P_1+P_2}{2}\)
                    • \(\dfrac{P_1P_2}{2(P_1+P_2)}\)
                    • \(\dfrac{P_1P_2}{4(P_1+P_2)}\)

                  • 6.
                    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.

                      CBSE CLASS XII Previous Year Papers

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