Current Electricity Insulators 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 The resistance of a straight conductor is independent of Temperature Cross-sectional area Shape of cross-section Material Temperature Cross-sectional area Shape of cross-section Material ANSWER DOWNLOAD EXAMIANS APP
Current Electricity At 0 K, germanium behaves as A conductor A superconductor An insulator A ferromagnetic substance A conductor A superconductor An insulator A ferromagnetic substance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The example of non-ohmic resistance is Copper wire Carbon resistance tungsten wire Aluminium wire Copper wire Carbon resistance tungsten wire Aluminium wire ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A rheostat differs from potentiometer in the respect that it Has lower wattage rating Has large number of turns Offers large number of tapping Has higher wattage rating Has lower wattage rating Has large number of turns Offers large number of tapping Has higher wattage rating ANSWER DOWNLOAD EXAMIANS APP
Current Electricity It becomes more difficult to remove Second electron from the orbit Any electron from the orbit Third electron from the orbit First electron from the orbit Second electron from the orbit Any electron from the orbit Third electron from the orbit First electron from the orbit ANSWER DOWNLOAD EXAMIANS APP
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