Q.
Choke coil is used to control
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a
ac
b
dc
c
Both ac and dc
d
Neither ac nor dc
answer is A.
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Detailed Solution
The choke coil can be used only in ac circuits, not in dc circuits, because for dc (ω = 0) the inductive reactance XL=ωL of the coil is zero, only the resistance of the coil remains effective which too is almost zero.
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