Question

an alternating current cannot be used for​

Answer 1

Answer:

In case of alternating current, the direction of current keeps changinf every 1/100th of a second. Due to changing direction of the current, the metallic ions in the electrolyte keeps shunting between the electrodes that keeps changing polarity. Hence AC current cannot be used in electroplating.

Since high voltages are more efficient for sending electricity great distances, AC electricity has an advantage over DC. This is because the high voltages from the power station can be easily reduced to a safer voltage for use in the house. ... This device uses properties of AC electromagnets to change the voltages.