The induced voltage causes an alternating current to flow. Transformers can only work with alternating current. Input and output voltages and currents are both alternating (a.c.) Mains voltage is ...
a primary potential difference drives an alternating current through the primary coil the primary coil current produces a magnetic field, which changes as the current changes the iron core ...
Section A, Section B, Section C, Section D and Section E. The exam will be held for 70 marks and students will get three ...