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_
Keep practising Electric Current, Resistance, and Ohm's Law
Browse all Electric Current, Resistance, and Ohm's Law questions for ASVAB, or explore more Physics topics.
Related questions
Sort AC from DCA 1200-W toaster runs for 1 minute to make a slice of toast. How much electrical energy doFuses and circuit breakers carry a rating that tells what they protect against. In which uMany electrical safety rules set the maximum allowed shock current at which value?Worn insulation lets a short circuit form across 240-V AC through a resistance of just 0.2A technician standing on a rubber mat has a total resistance of 300 kilohms. What current A 500-W room heater runs on 120-V AC power. What peak current does it draw?A wall outlet in a house supplies current that repeatedly reverses its direction of flow.