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A 4000-? resistor is connected across a 220-V power source. What current will flow through the resistor?

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MathPhys

Answer:

55 mA

Explanation:

Ohm's law states:

V = IR

where V is voltage, I is current, and R is resistance.

220 V = I (4000 Ω)

I = 0.055 A

I = 55 mA

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