Current-time graphs from two different sources are shown in the following diagrams. Now answer the following questions.
(1) Name the type of current shown by graph A and graph B.
(ii) Name any one source of the current shown by graph A and graph B.
(iii) What is the frequency of current in case B?
(iv) Write two difference between the current shown by graphs A and B.
Write one difference between A.C and D.C.