State PCS PYQPrelims 2024

BPSC – Combined Competitive Examination · வினா 123

Which of the following is equivalent to one tesla?

  1. Ampere per newton
  2. Newton per coulomb
  3. Newton per ampere-second
  4. Newton per ampere-metre
விடையைக் காட்டு & விளக்கம்

விடை: (D) Newton per ampere-metre

விளக்கம்

Using F = BIL, the tesla equals one newton per ampere-metre.

  • (A) தவறு

    Wrong: dimensionally wrong.

  • (B) தவறு

    Wrong: that is the unit of electric field.

  • (C) தவறு

    Wrong: A·s is a coulomb; missing velocity term.

  • (D) சரி

    Correct: from F = BIL, B = F/(IL), so T = N/(A·m).