Fig. 9.1 depicts a coil ABCD with two turns. The coil is placed in a magnetic field.
(a(i))[1]
Explain why this turning effect is produced.
(a(ii))[3]
Tick one box in each column of the table to show how the turning effect changes for the stated change.
(b(i))[2]
State any change seen on the galvanometer.
(b(ii))[2]
State any effect on the magnetic field generated by the coil.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The forces on AB and CD are directed vertically opposite to each other” …