BPSC – Combined Competitive Examination · Question 123
Which of the following is equivalent to one tesla?
Show answer & explanation
Answer: (D) Newton per ampere-metre
Explanation
Using F = BIL, the tesla equals one newton per ampere-metre.
- (A) Incorrect
Wrong: dimensionally wrong.
- (B) Incorrect
Wrong: that is the unit of electric field.
- (C) Incorrect
Wrong: A·s is a coulomb; missing velocity term.
- (D) Correct
Correct: from F = BIL, B = F/(IL), so T = N/(A·m).