Current Electricity Which of the following material has nearly zero temperature co-efficient of resistance? Carbon Porcelain Copper Manganin Carbon Porcelain Copper Manganin ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The example of non-ohmic resistance is Copper wire Aluminium wire Carbon resistance tungsten wire Copper wire Aluminium wire Carbon resistance tungsten wire ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The specific resistance of a metallic conductor ______ with rise in temperature. None of the listed here Increases Remains unchanged Decreases None of the listed here Increases Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Conductivity is the reciprocal of Resistance Resistivity Current density None of the listed here Resistance Resistivity Current density None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A rheostat differs from potentiometer in the respect that it Has higher wattage rating 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 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity For testing appliances, the wattage of test lamp should be Low Any value High Very low Low Any value High Very low ANSWER DOWNLOAD EXAMIANS APP
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