A simple circuit within a laptop has a single resistor with a resistance of 0.1 Ω and requires a current of 50 mA. Select the voltage that would allow the computer to function correctly.
Answer
A
5 V
B
50 V
C
500 mV
D
5 mV
Explanation
Use Ohm’s law, V = I × R. Convert 50 mA to 0.05 A, then calculate 0.05 A × 0.1 Ω = 0.005 V, which is 5 mV. Therefore, the correct choice is 5 mV.
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