Which of the following is used for determining the value of 1 ampere?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. A=1C/s.
The value of 1 ampere is determined using the concept of the force between two parallel conductors. According to the International System of Units (SI), 1 ampere is defined as the current that, when maintained in two straight parallel conductors of infinite length and negligible circular cross-section, placed 1 meter apart in a vacuum, produces a force of 2 × 10⁻⁷ newton per meter of length between them. This definition is fundamental to electrical measurements.