Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is About 2 ohms per degree Zero Positive Negative About 2 ohms per degree Zero Positive Negative ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The specific resistance of a metallic conductor ______ with rise in temperature. Remains unchanged None of the listed here Increases Decreases Remains unchanged None of the listed here Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of conductor varies inversely as Resistivity Area of cross-section Temperature Length Resistivity Area of cross-section Temperature Length ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Insulators have _______ temperature co-efficient of resistance. Zero None of the listed here Negative Positive Zero None of the listed here Negative Positive ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Specific resistance of a substance is measured in None of the listed here Ω/m Ω-m m/Ω None of the listed here Ω/m Ω-m m/Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Out of the following which is not a poor conductor? Copper Tungsten Carbon Cast iron Copper Tungsten Carbon Cast iron ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS