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# A 2.7 KΩ resistor dissipates 50 mW of power. What is the voltage across the resistor ?

A 2.7 Kilo-Ohm resistor dissipates 50 mW of power. What is the voltage across the resistor?

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- TBTLv 79 years agoFavorite Answer
Power = VI

and V =IR => I = V/R

Power = V * V/ R

50 * 10^-3 = V^2 / 2.7*10^3

V^2 = 135

V= 11.62 volt ---answer

Assuming DC circuit.

Source(s): My brain (Prof TBT) - KMcGLv 79 years ago
Ok Ohm's law current is equal to voltage times resistance.

And Power (watts) is equal to voltage times current.

There that's every thing you need to know to figure it out.

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