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MCQs

Total Questions : 441 | Page 2 of 45 pages
Question 11. The capacitance between two plates increases with
  1.    shorter plate area and higher applied voltage
  2.    shorter plate area and shorter distance between them
  3.    larger plate area, longer distance between plates and higher,applied voltage
  4.    larger plate area and shorter distance between plates
 Discuss Question
Answer: Option D. -> larger plate area and shorter distance between plates
Question 12. The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be
  1.    400 N/C
  2.    600 N/C
  3.    800 N/C
  4.    1200 N/C
 Discuss Question
Answer: Option C. -> 800 N/C
Question 13. A unit tube of flux is known as tube
  1.    Newton
  2.    Faraday
  3.    Michale
  4.    None of the above
 Discuss Question
Answer: Option B. -> Faraday
Question 14. A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?
  1.    Ceramic capacitor
  2.    Mica capacitor
  3.    Both will have identical value of capacitance
  4.    It depends on applied voltage
 Discuss Question
Answer: Option A. -> Ceramic capacitor
Question 15. Out of the following capacitors of identical rating which one will have the smallest dimensions ?
  1.    Aluminium foil capacitor
  2.    Mica capacitor
  3.    Ceramic capacitor
  4.    Paper capacitor
 Discuss Question
Answer: Option C. -> Ceramic capacitor
Question 16. Which of the following statements is incorrect ?
  1.    The leakage resistance of ceramic capacitors is generally high
  2.    The stored energy in a capacitor decreases with reduction in value of capacitance
  3.    The stored energy in a capacitor increases with applied voltage
  4.    A wire cable has distributed capacitance between the conductors
 Discuss Question
Answer: Option B. -> The stored energy in a capacitor decreases with reduction in value of capacitance
Question 17. For a good 0.05 uF capacitor ohmmeter reading should
  1.    show low resistance momentarily and back off to a very high resistance
  2.    show high resistance momentarily and then a very low resistance
  3.    go quickly to 50 ohm approximately and remain there
  4.    not move at all
 Discuss Question
Answer: Option A. -> show low resistance momentarily and back off to a very high resistance
Question 18. The total deficiency or excess of electrons in a body is known as
  1.    current
  2.    voltage
  3.    potential gradient
  4.    charge
 Discuss Question
Answer: Option D. -> charge
Question 19. The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be
  1.    36 x 10 fa
  2.    36 x 107 N
  3.    36 x 108 N
  4.    36 x 109 N
 Discuss Question
Answer: Option D. -> 36 x 109 N
Question 20. Which of the following is not a vector ?
  1.    Linear momentum
  2.    Angular momentum
  3.    Electric field
  4.    Electric potential
 Discuss Question
Answer: Option D. -> Electric potential

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