Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Inductors Semi-conductors Insulators Conductors Inductors Semi-conductors Insulators Conductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity International ohm is defined in terms of the resistance of A cube of copper A column of mercury The unit length of wire A cube of carbon A cube of copper A column of mercury The unit length of wire A cube of carbon 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
Current Electricity An open resistor, when checked with an ohmmeter reads Zero High but within tolerance Infinite Low but not zero Zero High but within tolerance Infinite Low but not zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The thickness of insulation provided on the conductor depends on The magnitude of voltage on the conductor The magnitude of current flowing through it None of the listed here Both magnitude of voltage and current The magnitude of voltage on the conductor The magnitude of current flowing through it None of the listed here Both magnitude of voltage and current 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 0.2% 0.3% 0.4% None of the listed here 0.2% 0.3% 0.4% None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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