Two ideal transformers, T1 T_1\,T1 and T2T_2T2, are connected in series. Transformer T1 T_1\,T1 has 1500 turns on its primary coil and 500 turns on its secondary coil. Transformer T2 T_2\,T2 has 1200 turns on its primary coil and 300 turns on its secondary coil.
The secondary coil of T1 T_1\,T1 is connected directly to the primary coil of T2T_2T2.
If transformer T2 T_2\,T2 delivers a current of 3.6 A to a motorized load, what is the current being supplied to the primary coil of transformer T1T_1T1?
2.7 A2.7\text{ A}2.7 A
0.9 A0.9\text{ A}0.9 A
0.3 A0.3\text{ A}0.3 A
0.1 A0.1\text{ A}0.1 A
136 exam-style questions on CIE IGCSE Physics 4.5.6a Construction and operation of a transformer. Each one has a worked solution and a mark scheme showing where the marks go.