Chapter 11

NCERT
Class 10
Science
Solutions
3. Calculate the number of electrons constituting one coulomb of charge.

Question:

Calculate the number of electrons constituting one coulomb of charge.

Answer:

Since, charge of electron = 1.6 × 10–19 C

No. of electrons = n

According to the question,

n × 1.6 × 10–19 = 1 C

n = 1/1.6 x 10-19 C

n = 109/1.6 x 100/16 x 1018

n = 6.25 × 1018

1 C = 6.25 × 1018 electrons

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