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 should be increased Length of heating element should be decreased None of these Length of heating element has no effect on heating if water Length of heating element should be increased Length of heating element should be decreased None of these Length of heating element has no effect on heating if water ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An electrical lamp coonsumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is 0.005 kWh 5 kWh 5 kWh 0.05 kWh 0.005 kWh 5 kWh 5 kWh 0.05 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a carbon filament lamp _______ as the applied voltage increases. Remains same Decreases Increases None of the listed here Remains same Decreases Increases None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot wire of electric bulb's filament is higher than its cold resistance because the temperature co-efficient of filament is Zero Negative None of the listed here Positive Zero Negative None of the listed here Positive ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Negative Positive About 2 ohms per degree Zero Negative Positive About 2 ohms per degree Zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The current in the circuit having constant resistance is tripled. The power increases 1/9 times 3 times 1/3 times 9 times 1/9 times 3 times 1/3 times 9 times ANSWER DOWNLOAD EXAMIANS APP
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