1.

What is the total charge on 75kg of electrons?

Answer»

Number of ELECTRONS in 75 kg = 759.11×10−31759.11×10−31

=8.23×1031=8.23×1031

Mass of ONE e−=9.11×10−3kge−=9.11×10−3kg

Charge on these electrons = −8.23×1031×1.6×10−19−8.23×1031×1.6×10−19

=−1.31×1013C


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