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klogsdon4380
23.10.2019 •
Physics
One circuit contains only an ac generator and a resistor, and the rms current in this circuit is ir. another circuit contains only an ac generator and a capacitor, and the rms current in this circuit is ic. the maximum, or peak, voltage of the generator is the same in both circuits and does not change. if the frequency of each generator is tripled, by what factor does the ratio ir/ic change?
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Ответ:
1/3 times.
Explanation:
Let V₀ be the peak voltage .
IR ( rms ) = ( V₀ / √2 R )
R is value of resistance
IC = ( V₀ ωC / √2 )
( 1 / ωC is reactance of capacitance in ac circuit )
=![\frac{I_R}{I_C} = \frac{1}{\omega C R}](/tpl/images/0341/7684/1c340.png)
When frequency is tripled angular frequency will also be tripled
hence the ratio
becomes 1/3 times.
Ответ:
co2
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