Question

Which of these statements is true?

A). a battery produces ac and a generator produces dc
B). a battery and a generator produce ac
C). a battery and a generator produce dc
D). a battery produces dc and a generator produces ac

Answer 1

D).

Step-by-step explanation:

ac = alternating current

dc = direct current

a battery delivers a continuous stream of electrons. they all move in one direction. there is no back/forth motion and corresponding change in the electrical charge. just one continuous flow. hence : dc.

ac is alternating current meaning that the electrical charge (negative or positive) is repeatedly changing (back/ forth/back/forth/...) with relatively high frequency (in Europe 50 Hz, in America 60 Hz).

hence : ac.

this ac principle is also the reason for flickering light (that we humans can directly see only at rare occasions like with fluorescent lights).

a generator CAN produce ac. basic generators ALSO produce dc like a battery.

Answer 2

Statement D is true: a battery produces direct current (DC) while a generator typically produces alternating current (AC), used for residential and commercial power systems.

Step-by-step explanation:

Among the statements given, D). a battery produces dc and a generator produces ac is true. A battery supplies direct current (DC), which is the flow of electric charge in only one direction. This current is used in devices that require a constant voltage, such as computers and cell phones. On the other hand, generators typically produce alternating current (AC). AC is the flow of electric charge that periodically reverses direction and its magnitude also varies sinusoidally over time. This type of current is commonly used in residential and commercial power systems. While there are generators that can produce DC, and devices that convert AC to DC, in the standard context of AC and DC sources, a battery is associated with DC, and a generator is more commonly associated with AC.