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Home » One coulomb charge is equivalent to the charge obtained in: a) electrons b) electrons c) electrons d) electrons
One coulomb charge is equivalent to the charge obtained in: a) 2 . 6 \times 1 0 ^ { 1 9 } electrons b) 6.2 \times 10^{19} electrons c) 2.65 \times 10^{18} electrons d) 6.25 \times 10^{18} electrons
CBSE | Class 10 | Electricity | Lakhmir Singh | Physics
One coulomb charge is equivalent to the charge obtained in: a) 2 . 6 \times 1 0 ^ { 1 9 } electrons b) 6.2 \times 10^{19} electrons c) 2.65 \times 10^{18} electrons d) 6.25 \times 10^{18} electrons

Answer:

The correct option is d) 6.25×1018 electrons

There are 6.25×1018 electrons in a one-coulomb charge.

A coulomb is a charge carried by an ampere per the second current.
1C=1A * 1s
We know Ampere and second are SI base units. So Coulomb’s value is obtained from these. In Millikan’s experiment, approximately 6.25×1018 electrons traveled across a unit area of the cross-section in 1 second.

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