Current Electricity Two Marks Questions

12th Standard EM

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Physics

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. What is superconductivity?

  2. What is electric power and electric energy?

  3. State Kirchhoff’s voltage rule.

  4. State the principle of potentiometer.

  5. What is Peltier effect?

  6. State the applications of Seebeck effect.

  7. Define resistance

  8. Distinguish between ohmic & non-ohmic device.

  9. Define the term electric power and circuit its SI unit.

  10. What does the voltage rating refers? What is use?

  11. What do you mean by end resistance? How can it be rectified?

  12. What is meant by Heating effect of electric current?

  13. What is the use of electric furnace?

  14. How heating effect is used in electrical lamp.Name other lamps which use the heating effected?

  15. How does the conductivity of a semiconductor change with rise in temperature? Explain.

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