Question
Download Solution PDFAssuming that the charge of an electron is 1.6 × 10-19 C, the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 6.25 x1018.
Key Points
- Given:
- Current, I = 1A
- Time = 1s
- Using the formula,
- Q = I x T
- Q = 1 x1
- C = 1
- Now if the charge is 1.6 x 10-19C, the number of electron is 1.So, if the charge is 1 C, the number of electron given by-
- 1/(1.6 x 10-19) x 1
- 6.25 x 1018
- Thus, 6.25 x 1018 electrons should pass through a conductor in one second to constitute 1 ampere current.
Additional Information
- Electric Current:
- Electric current in basic terms is the flow of electric charge.
- Common charge carriers are electrons, but they can also be ions as in the case of a chemical battery.
- The unit of amperage in the SI system is the ampere (A), 1 ampere is the amperage when a charge of 1 coulomb passes through the cross-section for 1 second.
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