Current Electricity Ohm's law is not applicable to Carbon resistors Vaccum tubes Circuits with low current densities High voltage circuits Carbon resistors Vaccum tubes Circuits with low current densities High voltage circuits ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In which of the following substances the resistance decreases with increase in temperature? Carbon Silver Constantan Copper Carbon Silver Constantan Copper ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a few meters of wire conductor in closed electrical circuit is Practically zero High Very high Low Practically zero High Very high Low ANSWER DOWNLOAD EXAMIANS APP
Current Electricity When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will None of these Remain constant Decrease Increase None of these Remain constant Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
Current Electricity All good conductors have high Conductance Thermal conductivity Reluctance Resistance Conductance Thermal conductivity Reluctance Resistance 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 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m 1.6 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m 1.6 x 10-8 ω-m 1.2 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
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