Current Electricity In which of the following substances the resistance decreases with increase in temperature? Carbon Copper Constantan Silver Carbon Copper Constantan Silver ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Semiconductors have _______temperature co-efficient of resistance. None of the listed here Negative Positive Zero None of the listed here Negative Positive Zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Electric current passing through the circuit produces Thermal effect Luminous effect Magnetic effect Chemical effect Thermal effect Luminous effect Magnetic effect Chemical effect ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a lamp load when more than one lamp are switched on the total resistance of the load Increases Decreases None of these Remains same Increases Decreases None of these Remains same ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Current velocity through a copper conductor is of the order of a few ^.s/m the same as propagation velocity of electric energy independent of current strength nearly 3 x 108 m/s of the order of a few ^.s/m the same as propagation velocity of electric energy independent of current strength nearly 3 x 108 m/s ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An electric filament bulb can be worked from All of the listed here DC supply only AC supply only Battery supply only All of the listed here DC supply only AC supply only Battery supply only ANSWER DOWNLOAD EXAMIANS APP
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