A high tension (HT) supply of, say, 6 kV must have a very large internal resistance. Why? - Physics

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Short Note

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

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Solution

In order to prohibit the current from exceeding the safety limit, a high tension supply must have a very large internal resistance. If the internal resistance is not large, then the current drawn can exceed the safety limits in case of a short circuit.

Concept: Measurement of Internal Resistance of a Cell
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Chapter 3: Current Electricity - Exercise [Page 129]

APPEARS IN

NCERT Physics Class 12
Chapter 3 Current Electricity
Exercise | Q 3.18 (d) | Page 129
NCERT Physics Class 12
Chapter 3 Current Electricity
Exercise | Q 18.4 | Page 129
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