Current Electricity Constantan wire is used for making starndard resistance because it has Low specific resistance Negligibly small temperature co-efficient of resistance High specific resistance High melting point Low specific resistance Negligibly small temperature co-efficient of resistance High specific resistance High melting point ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An electric filament bulb can be worked from All of the listed here Battery supply only AC supply only DC supply only All of the listed here Battery supply only AC supply only DC supply only ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A rheostat differs from potentiometer in the respect that it Offers large number of tapping Has lower wattage rating Has higher wattage rating Has large number of turns Offers large number of tapping Has lower wattage rating Has higher wattage rating Has large number of turns ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In which of the following substances the resistance decreases with increase in temperature? Copper Constantan Silver Carbon Copper Constantan Silver Carbon ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a straight conductor is independent of Temperature Shape of cross-section Material Cross-sectional area Temperature Shape of cross-section Material Cross-sectional area ANSWER DOWNLOAD EXAMIANS APP
Current Electricity For testing appliances, the wattage of test lamp should be High Very low Any value Low High Very low Any value Low ANSWER DOWNLOAD EXAMIANS APP
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