Current Electricity The resistance of conductor varies inversely as Area of cross-section Temperature Resistivity Length Area of cross-section Temperature Resistivity Length ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is 1 1.5 0.5 0.6 1 1.5 0.5 0.6 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ohm's law is not applicable to Vaccum tubes Circuits with low current densities High voltage circuits Carbon resistors Vaccum tubes Circuits with low current densities High voltage circuits Carbon resistors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Current velocity through a copper conductor is 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 of the order of a few ^.s/m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A closed switch has a resistance of Zero Infinity About 50 ohms About 500 ohms Zero Infinity About 50 ohms About 500 ohms 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 1.4 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.6 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
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