[amp_mcq option1=”Photoelectric effect” option2=”Chemical effect” option3=”Magnetic effect” option4=”Induction” correct=”option4″]
Electrostatics
42. Which of the following capacitors is marked for polarity ?
[amp_mcq option1=”Air” option2=”Paper” option3=”Mica” option4=”Electrolytic” correct=”option4″]
Detailed SolutionWhich of the following capacitors is marked for polarity ?
43. A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is
[amp_mcq option1=”0.024 F” option2=”0.12 F” option3=”0.6 F” option4=”0.8 F” correct=”option3″]
Detailed SolutionA capacitor stores 0.24 coulombs at 10 volts. Its capacitance is
44. The relative permittivity has the following units
[amp_mcq option1=”F/m” option2=”m/F” option3=”Wb/m” option4=”no units” correct=”option4″]
Detailed SolutionThe relative permittivity has the following units
45. An electric field line and an equipotential surface are
[amp_mcq option1=”Always parallel” option2=”Always at 90°” option3=”Inclined at any angle” option4=”None of the above” correct=”option2″]
Detailed SolutionAn electric field line and an equipotential surface are
46. Which of the following is not a vector ?
[amp_mcq option1=”Linear momentum” option2=”Angular momentum” option3=”Electric field” option4=”Electric potential” correct=”option4″]
47. Electric displacement is a______quantity.
[amp_mcq option1=”scalar” option2=”vector” option3=”both of the above” option4=”none of the above” correct=”option2″]
48. Electric field intensity is a quantity
[amp_mcq option1=”scalar” option2=”vector” option3=”both (A) and (B)” option4=”none of the above” correct=”option1″]
49. capacitors can be used only for D.C.
[amp_mcq option1=”Air” option2=”Paper” option3=”A. Air B. Paper C. Mica” option4=”Electrolytic” correct=”option4″]
50. capacitors are mainly used for radio frequency tuning.
[amp_mcq option1=”Paper” option2=”Air” option3=”Mica” option4=”Electrolytic” correct=”option3″]
Detailed Solutioncapacitors are mainly used for radio frequency tuning.