Home › ASVAB › Physics › Electric Current, Resistance, and Ohm's Law › A wall outlet in a house supplies current that r…
A wall outlet in a house supplies current that repeatedly reverses its direction of flow. What is this kind of current called?
ADirect current
BStatic electricity
CAlternating current
DConventional current
Answer & Solution
Correct answer: C. Alternating current
1. Current that periodically reverses its direction of flow is alternating current, AC.
2. Household electricity is AC; most residential power around the world is delivered this way.
3. Direct current flows in only one direction, so it is the opposite of what the outlet supplies.
4. Conventional current only names the assumed direction positive charge would flow; it is not a type of supply.
_Source: OpenStax College Physics (CC BY 4.0), Ch 20 "Electric Current, Resistance, and Ohm's Law", section 20.5 Alternating Current versus Direct Current_
Related questions
Two wires of identical shape but different metals carry different currents at the same volA battery supplies a constant voltage, which makes the circuit it drives:Electric energy and electric power are connected by treating power as a rate of:A current of 3 amperes means charge passes a point at a rate of:Two of the three electric power expressions are restricted because they can be used only fOf the three expressions given for electric power, how many are valid for any circuit elemFuses and circuit breakers are rated in which unit?Lightbulbs are commonly rated in which unit?