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A series AC circuit containing an inductor (20 mH), a capacitor (120  and resistor (60 ) is driven by an AC source of 24V/50Hz.  The energy dissipated in the circuit in 60 s is:

a.

2.26x103 J

b.

3.39x103J

c.

5.65x102J

d.

5.17x102J


Question ID - 50147 | SaraNextGen Answer

A series AC circuit containing an inductor (20 mH), a capacitor (120  and resistor (60 ) is driven by an AC source of 24V/50Hz.  The energy dissipated in the circuit in 60 s is:

a.

2.26x103 J

b.

3.39x103J

c.

5.65x102J

d.

5.17x102J

1 Answer - 5876 Votes

3537

Answer Key : (d) -

R=60    f=50Hz,   

Xc = =

Xc=26.52

XL= =100

Xc=XL=20.24

=

z = 20

cos =

Pavg =VI Cos   I=

=  Cos

=8.64  watt

Q = P.t = 8.64



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