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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Specific resistance of a substance is measured in Ω-m m/Ω Ω/m None of the listed here Ω-m m/Ω Ω/m None of the listed here 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 60 W 40 W 10 W 20 W 60 W 40 W 10 W 20 W ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is 5 kWh 2 kWh 6 kWh 3.2 kWh 5 kWh 2 kWh 6 kWh 3.2 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Varistors are Resistor with zero temperature co-efficient Carbon resistors Non-linear resistors Insulators Resistor with zero temperature co-efficient Carbon resistors Non-linear resistors Insulators ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following is the best conductor of electricity? Gold Silver Copper Zinc Gold Silver Copper Zinc ANSWER DOWNLOAD EXAMIANS APP
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