ICSE Class 10: Household Wiring System Videos | Electrical Power and Household Circuits

• A bulb R=100W run  for  1 hour everyday. Find  the bill for  30 day. (1 unit =7 )    
• Why are the wires in our houses made of copper and not iron. Prove with an experiment that copper is a better conductor of heat than iron? 
• state two advantages of the ring system
• What is phase wire in an electric cable

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