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Questions  >>  CBSE XII  >>  Physics  >>  Alternating current

Why do we prefer a choke coil to a rheostat in controlling a.c ?

$\begin{array}{1 1} \text{Large amount of heat energy is dissipated in a choke coil } \\ \text{No energy is dissipated in a choke coil } \\ \text{Less amount of energy is dissipated in a choke coil } \\ \text{None of the above }\end{array} $

1 Answer

Solution :
There is no power or energy dissipated in a choke coil.
But in a rheostat some energy is dissipated in the form of heat.
Answer : No energy is dissipated in a choke coil
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