Final answer:
It is false that galvanic current can be changed from direct current to alternating current by flipping a switch. A device known as an inverter is necessary to convert DC into AC, as simply flipping a switch will not alter the unidirectional flow characteristic of DC to the periodic reversing flow of AC.
Step-by-step explanation:
Can Galvanic Current Be Changed from Direct Current to Alternating Current by Flipping a Switch?
The question whether galvanic current can be changed from direct current (DC) to alternating current (AC) by flipping a switch is false. Galvanic current refers to the direct current obtained from a galvanic cell or battery, which flows in one direction. The magnitude of direct current is fixed, meaning it does not change over time. Unlike DC, alternating current reverses its direction at regular time intervals while its magnitude changes as well.
The concept of alternating versus direct current can be related to Faraday's experiments with magnetic fields and currents. As mentioned, he found that when a switch in his apparatus was rapidly opened and closed, it induced a current because of the changing magnetic field. But simply toggling a switch does not transform DC into AC. For the transformation of direct current into alternating current, a device called an inverter is needed. This device changes the DC input into an AC output by electronically switching the polarity of the DC current at the desired frequency.
Understanding Direct Current and Alternating Current
Direct current refers to the unidirectional flow of electric charge, whereas alternating current is characterized by the periodic reversal of direction of flow. The power supplied to our homes is typically in the form of alternating current, and this is different from the current supplied by a galvanic cell or a battery, which is direct current. To operate devices designed for AC, specific rectifiers and electronic circuits are required when using a DC source.