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 3.2 kWh 5 kWh 6 kWh 2 kWh 3.2 kWh 5 kWh 6 kWh 2 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The current in the circuit having constant resistance is tripled. The power increases 9 times 1/3 times 1/9 times 3 times 9 times 1/3 times 1/9 times 3 times ANSWER DOWNLOAD EXAMIANS APP
Current Electricity What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω? 100 V 150 V 50 V 200 V 100 V 150 V 50 V 200 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a series circuit with unequal resistances The lowest resistance has the highest current The highest resistance has the most of the current through it The highest resistance has the highest voltage drop The lowest resistance has the highest voltage drop The lowest resistance has the highest current The highest resistance has the most of the current through it The highest resistance has the highest voltage drop The lowest resistance has the highest voltage drop ANSWER DOWNLOAD EXAMIANS APP
Current Electricity When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will Remain constant None of these Increase Decrease Remain constant None of these Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following statement is true both for a series and a parallel D.C. circuit? Voltages are additive Power are additive Elements have individual currents Currents are additive Voltages are additive Power are additive Elements have individual currents Currents are additive ANSWER DOWNLOAD EXAMIANS APP
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