A laboratory current balance is used to measure the magnetic force acting on a straight segment of wire of length 8.0 cm carrying a current of 3.5 A. The wire is suspended in a uniform magnetic field at an angle of 30∘ 30^\circ\,30∘ to the field lines. The magnetic force on this wire segment is measured to be 7.7 × 10-2 N.
A student calculates the magnetic flux density B B\,B from these measurements and records the results in a database.
Which row in the table below shows the correct table heading for B B\,B and the correct value for BBB?
Table heading for BValue for BAB/Wb0.28BB/T0.55CB/Wb0.55DB/T0.28 \begin{array}{c|c|c} \hline & \textbf{Table heading for } B & \textbf{Value for } B \\ \hline \textbf{A} & B/\text{Wb} & 0.28 \\ \hline \textbf{B} & B/\text{T} & 0.55 \\ \hline \textbf{C} & B/\text{Wb} & 0.55 \\ \hline \textbf{D} & B/\text{T} & 0.28 \\ \hline \end{array} ABCDTable heading for BB/WbB/TB/WbB/TValue for B0.280.550.550.28Row A
Row B
Row C
Row D
