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 Length of heating element should be decreased Length of heating element should be increased None of these Length of heating element has no effect on heating if water Length of heating element should be decreased Length of heating element should be increased None of these ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An instrument which detects electric current is known as Galvanometer Rheostat Voltmeter Wattmeter Galvanometer Rheostat Voltmeter Wattmeter 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 Three resistance of 10 ohms, 15 ohms, and 30 ohm are connected in parallel. The total resistance of the combination is 10 ohms 55 ohms 15 ohms 5 ohms 10 ohms 55 ohms 15 ohms 5 ohms ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The example of non-ohmic resistance is Copper wire Aluminium wire Carbon resistance tungsten wire Copper wire Aluminium wire Carbon resistance tungsten wire ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is 0.3% 0.4% 0.2% None of the listed here 0.3% 0.4% 0.2% None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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