Current Electricity Which of the following material has nearly zero temperature co-efficient of resistance? Porcelain Carbon Copper Manganin Porcelain Carbon Copper Manganin ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A closed switch has a resistance of About 50 ohms Infinity Zero About 500 ohms About 50 ohms Infinity Zero About 500 ohms 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 None of the listed here 0.2% 0.4% 0.3% None of the listed here 0.2% 0.4% 0.3% ANSWER DOWNLOAD EXAMIANS APP
Current Electricity E. M. F. In a circuit None of the listed here Maintains potential difference Decrease circuit resistance Increases circuit resistance None of the listed here Maintains potential difference Decrease circuit resistance Increases circuit resistance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity For testing appliances, the wattage of test lamp should be Low Very low Any value High Low Very low Any value High ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Current velocity through a copper conductor is of the order of a few ^.s/m independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy of the order of a few ^.s/m independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy ANSWER DOWNLOAD EXAMIANS APP
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