Find number of electrons in 7C charge.
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Given: Charge q= 7coulomb.
To Find: Number of electrons.
Solution:
One coulomb (1 C) is the SI unit of charge. It is also defined as the charge in one Ampere of current flowing for one second.
Now,
An electron carries a charge= 1.6*10^-19 C.(It is for a single electron).
We can also say,
C = 1 electron
1 C = 1/ electron
Therefore,
7C =( 1/ ) × 7 electron
Therefore, 7C has 4.375 × 10^19 electrons.
Answer: 4.375 × 10^19 electrons.
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