Current Electricity
Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be

9 times
3 times
1/9 times
1/3 times

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Current Electricity
When current flows through heater coil it glows but supply wiring does not glow because

Supply wires are made of superior material
Current through supply line flows at slower speed
Supply wiring is covered with insulation layer
Resistance of heater coil is more than the supply wires

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