- Types of Transformer
- characteristics of primary and secondary coils
Complete the following sentence:
In a step-up transformer, the number of turns in the primary are …………than the number of turns in the secondary.
The following diagram in Fig. 10.44 shows a coil X connected to a sensitive centre –zero galvanometer G and a coil P connected to a battery through a switch S.
(a) Describe the observation when the switch S is (i) closed suddenly, (ii) then kept closed, (iii) finally opened.
(b) Name and state the law which explains the above observations.