SACE Stage 2 Physics Practice Exam

The charge of an electron is represented by a value of approximately 1.6 x 10^-19 coulombs. This value is fundamental in physics as it defines the electric charge carried by a single electron. Understanding this charge is crucial, as it plays a pivotal role in the study of electricity, magnetism, and the behavior of atoms.

The other options do not accurately represent the charge of an electron. The second option, 9.11 x 10^-31 C, refers to the mass of an electron rather than its charge. The third option, 1.673 x 10^-27 C, is linked to the mass of a proton, which is quite distinct from the charge of an electron. The last option, 0 C, suggests a neutral charge, which is incorrect for an electron that is negatively charged. Hence, the correct representation of an electron's charge stands out clearly as 1.6 x 10^-19 C.