Current Electricity International ohm is defined in terms of the resistance of A cube of carbon A column of mercury A cube of copper The unit length of wire A cube of carbon A column of mercury A cube of copper The unit length of wire ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An instrument which detects electric current is known as Wattmeter Galvanometer Voltmeter Rheostat Wattmeter Galvanometer Voltmeter Rheostat ANSWER DOWNLOAD EXAMIANS APP
Current Electricity At 0 K, germanium behaves as A conductor A superconductor An insulator A ferromagnetic substance A conductor A superconductor An insulator A ferromagnetic substance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Insulators 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 The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.8 x 10-8 ω-m 1.2 x 10-8 ω-m 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.8 x 10-8 ω-m 1.2 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Conductors Insulators Inductors Semi-conductors Conductors Insulators Inductors Semi-conductors ANSWER DOWNLOAD EXAMIANS APP
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