What is the mass-to-charge ratio of electrons?

Answer 1

The mass-to-charge ratio #m/e# of electrons is #5.685 × 10^"-12" color(white)(l)"kg/C"#.

The charge-to-mass ratio of electrons is a topic that chemists discuss more frequently.

The charge on an electron is #1.602 × 10^"-19"color(white)(l) "C"#, and the mass of an electron is #9.109 × 10^"-31"color(white)(l) "kg"#.

∴ #e/m = (1.602 × 10^"-19"color(white)(l) "C")/(9.109 × 10^"-31"color(white)(l) "kg") = 1.759 × 10^"-11"color(white)(l) "C/kg"#.

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Answer 2

Owen Ambrose

The mass-to-charge ratio of electrons is approximately ( \frac{-9.11 \times 10^{-31} \text{ kg}}{-1.60 \times 10^{-19} \text{ C}} ), which equals about ( -5.69 \times 10^{15} , \text{kg/C} ).

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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.