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Quarterly Exam Model Two Marks Questions

12th Standard

    Reg.No. :
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Physics

Time : 01:00:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. What is meant by quantisation of charges?

  2. Give the relation between electric field and electric potential.

  3. Give a comparison of electrical and gravitional forces?

  4. The graph shows the variation of voltage 'v' across the plates of two capacitors A & B versus increase of charge 'Q' stored on them. Which of the two capacitors has higher capacitance?
    Give reason.

  5. State microscopic form of Ohm’s law.

  6. State Kirchhoff ’s current rule.

  7. Discuss some appliances of Joule's heating effect. Name few electric heating devices & state on what principle do they work.

  8. Explain with the help of graph the variation of conductivity with temperate for a metallic conductor?

  9. What are the properties of materials used as an electromagnet?

  10. Tabulate End rule polarity with direction of current in circular loop using module.

  11. Define average value of an alternating current.

  12. What is the signifienance of Quality factor or Q-factor.

  13. Three ac circuits in which equal amount of circuits are flowing. If the frequency of emf is increased how will the current the affected in these circuits? Give reason.

  14. What are electromagnetic waves?

  15. What is the orgin of displacement currtent?

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