Current Electricity A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will Remains same Increases Heater will burn out Decreases Remains same Increases Heater will burn out Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators. Semiconductors Thermistor Variable resistors Varistors Semiconductors Thermistor Variable resistors Varistors 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? 50 V 100 V 200 V 150 V 50 V 100 V 200 V 150 V 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 nearly 3 x 108 m/s independent of current strength of the order of a few ^.s/m the same as propagation velocity of electric energy nearly 3 x 108 m/s independent of current strength ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of conductor varies inversely as Resistivity Area of cross-section Temperature Length Resistivity Area of cross-section Temperature Length ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In which of the following substances the resistance decreases with increase in temperature? Carbon Silver Copper Constantan Carbon Silver Copper Constantan ANSWER DOWNLOAD EXAMIANS APP
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