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Class X CBSE Physics Question Bank - Electricity

Question Bank from ELECTRICITY for Class X CBSE Physics

I. Very Short Answer Type Questions

  1. Define electric current
  2. Define 1 ampere
  3. What is the cause of resistance of a conductor?
  4. Define resistance
  5. Define one ohm.
  6. State ohm's law
  7. Write the mathematical form of ohm's law
  8. What is an electric circuit?
  9. What is an open circuit and a closed circuit?
  10. What are the factors affecting the resistance of a conductor?
  11. Define resisitivity.
  12. What is the unit of resisitivity?
  13. Why alloys are preferred to metals in making heating elements of heating appliances?
  14. State Joule's law of heating.
  15. Draw the circuit diagram to verify Ohm's law.
  16. Calculate the effective resistance when 3 resistors are connected (a) in series and (b) in parallel
  17. How many electrons make one coulomb of charge?
  18. Why the household wiring uses all appliances in parallel? Write the advantages.
  19. Draw a graph to show the variation of current with potential for a good conductor.
  20. What is the SI Unit of electric Potential?
  21. What do you mean by the statement; "The electric potential between the points A and B is 1 V"?
  22. There are two electric bulbs, one marked 60W 220V and the other marked 100W 220V. Which one of the two has a higher resistance?
  23. Of the two; a toaster of 1 kW and an electric heater of 2 kW, which has higher resistance?
  24. Name a metals which offers higher resistance to the passage of electricity than copper.
  25. Calculate the ratio of resistances of a 50W bulb and a 25 W bulb.
  26. Why is tungsten preferred to make the filament of an incandescent lamp?
  27. A wire of resistance 10 Ω is bent in the form of a circle. What is the effective resistance between the two points at the ends of any one of the diameter of the circle?
  28. ........... To be continued


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