Physics General Knowledge MCQs

56. What is the process by which an atom loses or gains electrons?
a) Conduction
b) Induction
c) Radiation
d) Ionization

57. What is the unit of power in the metric system?
a) Watt
b) Horsepower
c) Kilowatt
d) Joule

58. What is the formula for electric potential energy?
a) U = Fd
b) U = QV
c) U = mgh
d) U = 1/2mv²

59. Which type of energy is produced by the movement of electric charges?
a) Nuclear energy
b) Chemical energy
c) Thermal energy
d) Electrical energy

60. What is the process by which a solid turns directly into a gas?
a) Vaporization
b) Sublimation
c) Melting
d) Condensation