10 - Science - 16. Physics - Electricity And Energy

9 Questions

Settings
Please wait...
10 - Science - 16. Physics - Electricity And Energy

Prepared By Mr. S. Ravikumar, B. T. Asst. , GHS, Arangaldhurgam, Vellore District.   ; &nbs p; & www. Padasalai. Net


Questions and Answers
  • 1. 
    The potential difference required to pass a current 0.2 A in a wire of resistance 20 ohm is ________
    • A. 

      100 V

    • B. 

      4 V

    • C. 

      0.01 V

    • D. 

      40 V

  • 2. 
    Two electric bulbs have resistances in the ratio 1 : 2. If they are joined in series, the energy consumed in these are in the ratio _________
    • A. 

      1:2

    • B. 

      2:1

    • C. 

      4:1

    • D. 

      1:1

  • 3. 
    Kilowatt-hour is the unit of __________
    • A. 

      Potential difference

    • B. 

      Electric power

    • C. 

      Electric energy

    • D. 

      Charge

  • 4. 
    ________ surface absorbs more heat than any other surface under identical conditions.
    • A. 

      White

    • B. 

      Rough

    • C. 

      Black

    • D. 

      Yellow

  • 5. 
    The atomic number of natural radioactive element is _________
    • A. 

      Greater than 82

    • B. 

      Less than 82

    • C. 

      Not defined

    • D. 

      Atleast 92

  • 6. 
    From the following statements write down that which does not represent ohm’s law.
    • A. 

      Current / potential difference = constant

    • B. 

      Potential difference / current = constant

    • C. 

      Current = resistance x potential difference

  • 7. 
    Fill in the blanks Potential difference : voltmeter, then:  current __________
    • A. 

      Ammeter

    • B. 

      Voltmeter

    • C. 

      Galvanometer

    • D. 

      Parapmeter

  • 8. 
    Fill in the blanks Power plant : conventional source of energy then solar energy _____. (Non-conventional source)
    • A. 

      Conventional source

    • B. 

      Non-conventional source

  • 9. 
    In the list of sources of energy given below, some of them are wrong. List out the wrong one. Wind energy, solar energy, hydro electric power, tidal energy,
    • A. 

      Wind energy

    • B. 

      Solar energy

    • C. 

      Hydro electric power

    • D. 

      Tidal energy