MCQ
Choke coil is used to control
- ✓$ac$
- B$dc$
- CBoth $ ac$ and $ dc $
- DNeither $ac $ nor $ dc$
✓
Answer
Correct option: A.
$ac$
a
(a)The choke coil can be used only in $ac$ circuits, not in $ dc $ circuits, because for $ dc$ $ (\omega = 0)$ the inductive reactance ${X_L} = \omega L$ of the coil is zero, only the resistance of the coil remains effective which too is almost zero.
(a)The choke coil can be used only in $ac$ circuits, not in $ dc $ circuits, because for $ dc$ $ (\omega = 0)$ the inductive reactance ${X_L} = \omega L$ of the coil is zero, only the resistance of the coil remains effective which too is almost zero.
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