Electrical Engineering · Underground Cables
एक भूमिगत केबल के इंसुलेशन की सापेक्ष पारगम्यता (Relative Permittivity) 2 है। यदि इंसुलेटिंग सामग्री को 4 की सापेक्ष पारगम्यता वाली अन्य सामग्री से बदल दिया जाए, तो केबल की धारिता (Capacitance):
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