Physics General Knowledge MCQs

31. What is the formula for electric potential energy?
a) PE = IV
b) PE = I²R
c) PE = V²/R
d) PE = QV

32. What is the unit of electric potential?
a) Volt
b) Ampere
c) Watt
d) Ohm

33. What is the process by which light bounces off a surface?
a) Reflection
b) Refraction
c) Diffraction
d) Interference

34. What is the SI unit of magnetic flux?
a) Weber
b) Watt
c) Joule
d) Ohm

35. What is the formula for magnetic field strength?
a) B = F/Q
b) B = Q/V
c) B = μI/2πr
d) B = 1/2mv²