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A flashlight passes a total of 600 C of charge in 0.500 h. What is the average current?
A0.15 A
B0.33 A
C1.20 A
D3.30 A
Answer & Solution
Correct answer: B. 0.33 A
1. Current is the rate of charge flow: I = charge / time, with time in seconds.
2. Convert the time: 0.500 h = 1,800 s.
3. Divide: I = 600 C / 1,800 s = 0.33 A.
4. 0.15 A comes from dividing by 3,600 s as if the charge had taken a full hour.
_Source: OpenStax College Physics (CC BY 4.0), Ch 20 "Electric Current, Resistance, and Ohm's Law", section 20.1 Current_
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