Current Electricity A copper wire has a resistance of 10 Ω. It is stretched by one-tenth of its original length. Then its resistance will be 10 Ω 9 Ω 11 Ω 12.1 Ω 10 Ω 9 Ω 11 Ω 12.1 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The insulation on a current carrying conductor is provided None of above factors Both of the listed here To prevent leakage of current To prevent shock None of above factors Both of the listed here To prevent leakage of current To prevent shock ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has Negligibly small temperature co-efficient of resistance Low specific resistance High specific resistance High melting point Negligibly small temperature co-efficient of resistance Low specific resistance High specific resistance High melting point ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a straight conductor is independent of Shape of cross-section Cross-sectional area Material Temperature Shape of cross-section Cross-sectional area Material Temperature ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A rheostat differs from potentiometer in the respect that it Has lower wattage rating Offers large number of tapping Has large number of turns Has higher wattage rating Has lower wattage rating Offers large number of tapping Has large number of turns Has higher wattage rating ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Insulators have _______ temperature co-efficient of resistance. Zero Positive Negative None of the listed here Zero Positive Negative None of the listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS