Current Electricity Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 4 : 25 2 : 5 5 : 2 25 : 4 4 : 25 2 : 5 5 : 2 25 : 4 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? Losses kWh consumed True component of power Input power Losses kWh consumed True component of power Input power ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a lamp load when more than one lamp are switched on the total resistance of the load Decreases Remains same Increases None of these Decreases Remains same Increases None of these ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be 9 times 1/3 times 3 times 1/9 times 9 times 1/3 times 3 times 1/9 times ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is 33 V 132 V 80 V 66 V 33 V 132 V 80 V 66 V 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 50 V 200 V 150 V 100 V 50 V 200 V 150 V ANSWER DOWNLOAD EXAMIANS APP
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