Current Electricity A closed switch has a resistance of About 500 ohms About 50 ohms Zero Infinity About 500 ohms About 50 ohms Zero Infinity ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Insulators have _______ temperature co-efficient of resistance. Zero None of the listed here Positive Negative Zero None of the listed here Positive Negative ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Out of the following which is not a poor conductor? Copper Cast iron Tungsten Carbon Copper Cast iron Tungsten Carbon ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Conductors Inductors Semi-conductors Insulators Conductors Inductors Semi-conductors Insulators ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has Negligibly small temperature co-efficient of resistance High melting point High specific resistance Low specific resistance Negligibly small temperature co-efficient of resistance High melting point High specific resistance Low specific resistance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Semiconductors have _______temperature co-efficient of resistance. None of the listed here Negative Zero Positive None of the listed here Negative Zero Positive ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS