In connection with the working of a microphone, a few statements are given in boxes.

Arrange them in the proper order.

The current in the secondary coil of a transformer is 1A and that in the primary is 0.5 A.

If 200 V is available in the secondary coil of this transformer, what is the voltage in the primary?

The current in the secondary coil of a transformer is 1A and that in the primary is 0.5 A.

Explain the working principle of a transformer.

Given below is a graph of the output from the secondary coil of a transformer. Observe the graph and answer the following questions.

(a) The electricity produced from which type of generator does the given graph represent?

(b) The maximum and minimum voltages in A, B, C are the same Give the reason.

Thick insulated copper wires are used in the primary coil of a step up transformer and in the secondary of a step-down transformer. What is the necessity of doing this? Why is it so?