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.
    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

    • 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.
          Four independent waves are expressed as \[ (i)\; y_1=A_1\sin\omega t, \] \[ (ii)\; y_2=A_2\sin 2\omega t, \] \[ (iii)\; y_3=A_3\cos\omega t, \] \[ (iv)\; y_4=A_4\sin\left(\omega t+\frac{\pi}{3}\right) \] The interference between two of these waves is possible in

            • (i) and (iii) only
            • (iii) and (iv) only
            • (i), (iii) and (iv) only
            • All of them

          • 4.
            Write any two features of nuclear forces.


              • 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.
                  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.

                    CBSE CLASS XII Previous Year Papers

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