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Physics for IGCSE & O level - Electricity (Section 12 - No. 11)

What is the main advantage of double insulation?
Prevents the appliance from overheating
Provides an extra layer of protection against electric shock
Makes the appliance more energy-efficient
Allows the appliance to work with higher voltage

स्पष्टीकरण

Double insulation provides extra protection against electric shock.

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