(a)[2]
Define the unit tesla.
(b(i))[2]
Determine $B$, the magnetic flux density, in mT.
(b(ii))[1]
State, with a reason, whether the reading on the newton meter increases or decreases.
(b(iii))[1]
The frame is lowered further so that the vertical sides begin to enter the magnetic field. Suggest the effect this will have on the frame.