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How are positrons and electrons different?

Answer 1

opposite charge, different ways of being produced

Because the charges of a positron and an electron are of equal magnitude—a positron has a positive charge and an electron has a negative charge—annihilation preserves the total charge because no charge is released in the form of two or more gamma rays.

While electrons are present in all atoms, even stable ones, positrons can only be produced through pair production or radioactive decay (through weak interactions).

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Answer 2

Naomi Aronson

Electrons are negatively charged elementary particles that orbit the nucleus of an atom, while positrons are positively charged elementary particles with the same mass as electrons but the opposite charge.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.