Current Electricity An electrical lamp coonsumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is 0.05 kWh 5 kWh 0.005 kWh 5 kWh 0.05 kWh 5 kWh 0.005 kWh 5 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals 10 W 40 W 20 W 60 W 10 W 40 W 20 W 60 W ANSWER DOWNLOAD EXAMIANS APP
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 has no effect on heating if water None of these Length of heating element should be decreased Length of heating element should be increased Length of heating element has no effect on heating if water None of these Length of heating element should be decreased ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The flow of current in solids is due to Nucleus Electrons Atoms Electrons and ions Nucleus Electrons Atoms Electrons and ions ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other? 18 Q 64 Q 48 Q 36 Q 18 Q 64 Q 48 Q 36 Q ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
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