Which of the following is used for determining the value of 1 ampere.  

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SSC CPO 2024 Official Paper-I (Held On: 27 Jun, 2024 Shift 2)
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  1. A = 2C/s
  2. A = 1C/s 
  3. C = A/2s
  4. C = A × 2s 

Answer (Detailed Solution Below)

Option 2 : A = 1C/s 
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SSC CPO : General Intelligence & Reasoning Sectional Test 1
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Detailed Solution

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The correct answer is A = 1C/s

Key Points

  • 1 ampere is defined as the amount of current that flows when 1 coulomb (C) of charge passes a point in 1 second (s).
  • The formula for current (I) is given by I = Q / t, where 'I' is the current in amperes, 'Q' is the charge in coulombs, and 't' is the time in seconds.
  • According to the options provided, Option 2: A = 1C/s correctly represents this relationship.
  • This definition is fundamental in the field of electromagnetism and is used to standardize measurements of electric current.

Additional Information

  • The ampere is one of the seven base units in the International System of Units (SI).
  • It is named after the French physicist André-Marie Ampère, who is considered one of the founders of the science of electromagnetism.
  • The ampere is a crucial unit in electrical and electronic engineering, affecting everything from circuit design to power distribution.
  • Modern definitions of units like the ampere rely on fundamental physical constants, ensuring consistency and precision in scientific measurements.
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