Electric current is defined as the rate at which:
ACharge flows
BMass moves
CHeat escapes
DLight travels
Answer & Solution
Correct answer: A. Charge flows
1. Current is a rate, so it counts something per unit time.
2. Electric current is defined to be the rate at which charge flows.
3. More charge past a point each second means a larger current.
4. Heat and light flows are described by other quantities.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 20 'Electric Current, Resistance, and Ohm's Law', sections 20.1-20.7_
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