Anonymous
Anonymous asked in Science & MathematicsPhysics · 1 decade ago

A 2.2 kΩ resistor in a stereo system dissipates 42 mW of power. what is the voltage across the resistor?

A 2.2 kΩ resistor in a stereo system dissipates 42 mW of power. what is the voltage across the resistor?

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  • 1 decade ago
    Best Answer

    P = E²/R

    .042 = E²/2200

    E² = 92.4

    E = 9.61 volts

    .

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