The charge on one proton is:
Correct answer: C. 1.602 x 10^-19 C
- A. 1.602 x 10^-31 C
- B. 1.602 x 10^-27 C
- C. 1.602 x 10^-19 C
- D. 1.602 x 10^-11 C
Explanation
This is a factual recall question. The charge on a proton is equal to +1e, where e is the elementary charge having a value of 1.602 x 10-19 coulombs. This is the same as the charge on an electron but has a different polarity, i.e. positive instead of negative for electrons.
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About Discovery of the Proton
The discovery of the proton follows the study of positive rays, also called canal rays, observed in discharge tubes and later identified as positively charged particles. The work of Goldstein and Rutherford is linked to the proton's charge, relative mass and role in the nuclear model, distinct from the discovery of the electron.
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