Current Electricity At 0 K, germanium behaves as An insulator A superconductor A conductor A ferromagnetic substance An insulator A superconductor A conductor A ferromagnetic substance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Semiconductors have _______temperature co-efficient of resistance. Negative None of the listed here Zero Positive Negative None of the listed here Zero Positive ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Voltage dependent resistors are used For inductive circuits As heating elements As current stabilizers To suppress surges For inductive circuits As heating elements As current stabilizers To suppress surges ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Positive Negative About 2 ohms per degree Zero Positive Negative About 2 ohms per degree Zero 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 200 V 50 V 100 V 150 V 200 V 50 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? kWh consumed Losses True component of power Input power kWh consumed Losses True component of power Input power ANSWER DOWNLOAD EXAMIANS APP
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