Question

An alternating emf e=20sin(100t) volts is applied on a capacitor of 10 microfarads calculate the expression for instantaneous current and also find rms current

Answer 1

Explanation:

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Answer 2

Answer:

According to the given data , reactance of the capacitance, X

C

=

ωC

1

=

2π×50×10×10

−6

1

=318.5Ω'

Hence , impedence ,Z=

R

2

+X

C

2

=

100

2

+318.5

2

=333.89=334Ω

so, current flowing I

rms

=

Z

V

=

334

100

=0.299=0.30A

average power ,p

av

=I

rms

2

R=0.3

2

×100=0.9W

Explanation:

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