Current Electricity In the case of direct current Magnitude and direction of current remains constant Magnitude of current changes with time Magnitude of current remains constant Magnitude and direction of current changes with time Magnitude and direction of current remains constant Magnitude of current changes with time Magnitude of current remains constant Magnitude and direction of current changes with time ANSWER DOWNLOAD EXAMIANS APP
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 A wire having very high value of conductance is said to be Moderately good conductor Very good conductor None of the listed here Insulator Moderately good conductor Very good conductor None of the listed here Insulator 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 Zero Negative Positive About 2 ohms per degree Zero Negative Positive About 2 ohms per degree ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The SI unit of power is Watt-hour Henry Coulomb Watt Watt-hour Henry Coulomb Watt ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following material has nearly zero temperature co-efficient of resistance? Copper Manganin Porcelain Carbon Copper Manganin Porcelain Carbon ANSWER DOWNLOAD EXAMIANS APP
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