Current Electricity
A resistance having rating 10 ohms , 10 W is likely to be a

Variable resistor
Wire wound resistor
Carbon resistor
Metallic resistor

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Current Electricity
In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes, using same supply mains

Length of heating element has no effect on heating if water
None of these
Length of heating element should be increased
Length of heating element should be decreased

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