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Questions  >>  CBSE XII  >>  Physics  >>  Current Electricity
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Q)

A high tension (HT) supply of say $6kv$ must have a very large internal resistance . Why ?

$\begin{array}{1 1} \text{HT supply should have very large external resistance } \\ \text{HT supply should have very low external resistance } \\ \text{HT supply should have very low internal resistance } \\ \text{HT supply should have very high internal resistance } \end{array} $

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Solution :
A HT supply should have very large internal resistance .
This is because if the circuit is short circuited and if the internal resistance is not large enough than the current drawn , then it will exceeds the safe limit and will come severe damages
Answer : HT supply should have very high internal resistance
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