How many electrons would it take to make up a charge of minus one millionth of a coulomb?
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One millionth of coulombs means 1 micro coulombs
e.g., charge is given , Q = 1μC = 10⁻⁶C
We know, charge on an electron = 1.6 × 10⁻¹⁹ C
Let there are n number of electrons ,
Then, n × 1.6 × 10⁻¹⁹C = 10⁻⁶C
n = 10⁻⁶/1.6 × 10⁻¹⁹ = 10/1.6 × 10⁻⁶⁺¹⁹
n = 6.25 × 10¹³
Hence, number of electrons = 6.25 × 10¹³
e.g., charge is given , Q = 1μC = 10⁻⁶C
We know, charge on an electron = 1.6 × 10⁻¹⁹ C
Let there are n number of electrons ,
Then, n × 1.6 × 10⁻¹⁹C = 10⁻⁶C
n = 10⁻⁶/1.6 × 10⁻¹⁹ = 10/1.6 × 10⁻⁶⁺¹⁹
n = 6.25 × 10¹³
Hence, number of electrons = 6.25 × 10¹³
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5
electrons would it take to make up a charge of minus one millionth of a coulomb? Answer is attached
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