51. The force on an electron in a uniform field of 20 N/C is
Answer: D. 3.2×10-18 N
Physics Class 10 Unit 15: Electrostatics MCQs
65 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers". This is page 2 of 2.
Tap an option to check your answer.
52. A charge of -1.0×10-4 C is in a field of 1.7×104 N/C directed right. The force is
Answer: A. 1.7 N to the left
53. An electrostatic precipitator is used to
Answer: C. remove dust from smoke in chimneys
54. Most photocopy machines use an electrostatic process called
Answer: A. xerography
55. Selenium acts as a photoconductor, meaning it is an insulator in the dark and a ______ in light.
Answer: B. conductor
56. A faint glow around sharp points of conductors at high voltage is called
Answer: D. corona discharge
57. Corona discharge is most likely to occur at
Answer: B. sharp points
58. Branching tree-like patterns formed on insulators by high-voltage discharges are called
Answer: C. Lichtenberg figures
59. Lightning occurs when charges separate in clouds, with positive charges rising to the
Answer: D. top of the cloud
60. The zigzag path of excess electrons travelling from the cloud base to the ground is called a
Answer: A. step leader
61. In lightning, negative charge may move to the ground at speeds up to about
Answer: C. 100,000 km/s
62. A lightning rod was invented by
Answer: D. Benjamin Franklin
63. A lightning rod protects a building by providing
Answer: A. a safe path for current to the ground
64. To be safe during a lightning storm, it is best to be
Answer: B. inside a metal car
65. The hair of a person touching a Van de Graaff generator lifts because the strands
Answer: C. have the same charge and repel each other
About Physics Class 10 Unit 15 MCQs (Federal Board)
These 65 Physics MCQs cover Class 10 Unit 15: Electrostatics of the Federal Board (FBISE) SSC-II (Class 10) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. The questions are split over 2 pages of 50. You can also read the Electrostatics notes for this chapter. Download the Electrostatics MCQs as a PDF using the button at the top of this page.