Question 135: AC fundamentals

Question

The angular frequency of alternating current in a L-C-R circuit is 100 rad/s. The components connected are shown in the figure. Find the value of inductance of the coil and capacity of condenser.

Accepted Answer

Since key is open, circuit is series
15 = i
rms
(60)
$$ 	herefore $$ i
rms
= $${1 \over 4}$$A
Now, 20 = $${1 \over 4}$$ X
L
= $${1 \over 4}$$ ($$\omega$$L)
$$ 	herefore $$ L = $${4 \over 5}$$ = 0.8 H
and 10 = $${1 \over 4}$$$${1 \over (100C)}$$
C = $${1 \over 4000}$$F = 250$$\mu$$F

Answer

0.8 H and 150 $$\mu$$F

Answer

0.8 H and 250 $$\mu$$F

Answer

1.33 H and 150 $$\mu$$F

Answer

1.33 H and 250 $$\mu$$F

AC fundamentals

The angular frequency of alternating current in a L-C-R circuit is 100 rad/s. The components connected are shown in the figure. Find the value of inductance of the coil and capacity of condenser.

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