Physics · Electrostatics
An underground cable has an insulation of relative permittivity 2. If the insulating material is replaced by another material of relative permittivity 4, then the capacitance of the cable becomes:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Halved
- 2Doubled✓
- 3Quadrupled
- 4Unchanged
Correct answer
Doubled
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