Question
Asked Nov 17, 2019
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A 24.0 nF capacitor is connected across an AC generator that produces a peak voltage of 5.90 V.

a. At what frequency f is the peak current 60.0 mA ?

b. What is the instantaneous value of the emf at the instant when iC =IC?

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Expert Answer

Step 1

a)

In capacitor, peak current and peak voltage is related as,

= I_
max
1
= Iras
max
Co
1
max
C27f
f =
2лсу
max
max
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= I_ max 1 = Iras max Co 1 max C27f f = 2лсу max max

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Step 2

Substituting the values,

103A
60.0mA
mA
f =
2T 24.0nF
10 F
590V)
InF
=0.067 x10 Hz
1kHz
=67 x103 Hz
10 Hz
67KHZ
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103A 60.0mA mA f = 2T 24.0nF 10 F 590V) InF =0.067 x10 Hz 1kHz =67 x103 Hz 10 Hz 67KHZ

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Step 3

Answer: 67 ...

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