Question

Which of the following expressions shows the correct relationship between 1 T (1 tesla) and other common units?1) 1 N/(Am)2) 1 Nm/A3) 1 NAm4) 1 A/(Nm)

Answer 1

The magnetic force is given by the equation,

`F=\text{qvB}`

On rearranging the above equation,

`B=(F)/(qv)`

On substituting the quantities with their units,

`\begin{gathered} T=(N)/(C\cdot(m)/(s)) \\ \end{gathered}`

But couloumb per second is ampere.

Thus,

`T=(N)/(A\cdot m)`

Therefore the correct answer is option 1, 1 N/(Am)