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smnam smnam
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11 years ago
A sinusoidally varying voltage that has a frequency of 4700Hz is applied across a 0.5W, 47? resistor.

Calculate the peak value of the voltage in V, such that the resistor is not overloaded.
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Leo
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#1
11 years ago
There is not enough information.  You need to know the current or the voltage to figure it out.

If you know the RMS voltage, the peak voltage is 1.414 times the RMS.
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buddyl91buddyl91
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11 years ago
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#3
11 years ago
P = E²/R
0.5 = E²/47
E = 4.85 volts RMS
peak = 6.86 volts

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