Current Electricity Semiconductors have _______temperature co-efficient of resistance. None of the listed here Positive Negative Zero None of the listed here Positive Negative Zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Electrical current is due to the flow of Negative charges only Both positive and negative charges Positive charges only Neutral particles only Negative charges only Both positive and negative charges Positive charges only Neutral particles only ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is 0.2% None of the listed here 0.4% 0.3% 0.2% None of the listed here 0.4% 0.3% ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the number of valence electrons of an atoms is less than 4,the substance is usually A semiconductor An insulator None of the listed here A conductor A semiconductor An insulator None of the listed here A conductor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A resistance having rating 10 ohms , 10 W is likely to be a Carbon resistor Variable resistor Metallic resistor Wire wound resistor Carbon resistor Variable resistor Metallic resistor Wire wound resistor ANSWER DOWNLOAD EXAMIANS APP
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 Positive Zero Negative About 2 ohms per degree Positive Zero Negative ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS