Current-time graphs of two different sources are shown in the following figures: Name the type of current shown by graph A and graph B.

Graph A represents a D C current and graph B represents an A C current. Note: Alternating Current (AC) is a type of electrical current, in which the direction of the flow of electrons switches back and forth at regular intervals or cycles. Direct current (DC) is electrical current which flows consistently in one direction.

Current-time graphs of two different sources are shown in the following figures: Name any one source of each type of the current.

Graph I represent a DC current and graph II represent an AC current. Storage devices such as batteries give DC current whereas power coming from power stations is a source of AC.

Current-time graphs of two different sources are shown in the following figures: What is the frequency of the current in case B?

The current in figure B completes a cycle in 0 . 02 seconds . That is, it can complete 1 0 . 02 cycles in one second . So, the frequency f = 50 Hz .

Current-time graphs of two different sources are shown in the following figures: Now answer the following questions: Write two differences between the current types shown by graphs A and B.

Graph A represents a DC current and graph B represents an AC current. Alternating current Direct current In AC the flow of current changes its direction backwards periodically. It flows in a single direction steadily. The frequency of AC is depended upon the country. But, generally, the frequency is 50 Hz or 60 Hz . DC has no frequency or it has zero frequency.