This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
c) Step 1: State the principle of a transformer. A transformer operates on the principle of electromagnetic induction. This requires a changing magnetic field to induce an electromotive force (e.m.f.) in the secondary coil. Step 2: Explain why a.c. is necessary. Alternating current (a.c.) continuously changes its direction and magnitude, which in turn produces a continuously changing magnetic flux in the primary coil. This changing flux links with the secondary coil, inducing an a.c. voltage across it. Direct current (d.c.) produces a constant magnetic field, which does not induce a continuous e.m.f. in the secondary coil. Last free one today — make it count tomorrow, or type /upgrade for unlimited.