Which of the following is equivalent to one tesla?

উত্তর: (D) Newton per ampere-metre

• (A) ভুল

  Wrong: dimensionally wrong.

• (B) ভুল

  Wrong: that is the unit of electric field.

• (C) ভুল

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

• (D) সঠিক

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