Current Electricity The resistance of two wires is 25 Ω when connected in series and 6 Ω when joined in parallel. The resistance of each wire is 10 Ω, 20 Ω 5 Ω, 10 Ω 10 Ω, 15 Ω 20 Ω, 30 Ω 10 Ω, 20 Ω 5 Ω, 10 Ω 10 Ω, 15 Ω 20 Ω, 30 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Semiconductors have _______temperature co-efficient of resistance. Zero Positive None of the listed here Negative Zero Positive None of the listed here Negative ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Semi-conductors Conductors Insulators Inductors Semi-conductors Conductors Insulators Inductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which method can be used for absolute measurement of resistances? Releigh method Ohm's law method Wheastone bridge method Lorentz method Releigh method Ohm's law method Wheastone bridge method Lorentz method ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes, using same supply mains None of these Length of heating element should be decreased Length of heating element has no effect on heating if water Length of heating element should be increased None of these Length of heating element should be decreased Length of heating element has no effect on heating if water Length of heating element should be increased 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 A conductor None of the listed here An insulator A semiconductor A conductor None of the listed here An insulator ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS