By what factors does the speed of the elctron exceed that of the proton?
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» An electron is lighter than a proton.

explanation:

hence it's mass number is zero

hence it's mass number is 4

Therefore, proton is heavier than electron

» An electron has a small charge magnitude than a proton.

Explanation:

An electron has charge of -1 while proton has charge of +2, therefore electron is less deflected by any energetic fields than a proton

photocells convert light energy to electricity

compass can be used day and night, cloudy or sunny