Current Electricity Constantan wire is used for making starndard resistance because it has High specific resistance Low specific resistance Negligibly small temperature co-efficient of resistance High melting point High specific resistance Low specific resistance Negligibly small temperature co-efficient of resistance High melting point ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Zero About 2 ohms per degree Positive Negative Zero About 2 ohms per degree Positive Negative ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The specific resistance of a metallic conductor ______ with rise in temperature. Increases Decreases Remains unchanged None of the listed here Increases Decreases Remains unchanged None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Out of the following which is not a poor conductor? Copper Tungsten Cast iron Carbon Copper Tungsten Cast iron Carbon ANSWER DOWNLOAD EXAMIANS APP
Current Electricity One commercial unit of energy equals One watt-hour Ten kilowatt-hour One kilowatt-hour One watt-hour One watt-hour Ten kilowatt-hour One kilowatt-hour One watt-hour ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An open resistor, when checked with an ohmmeter reads High but within tolerance Zero Infinite Low but not zero High but within tolerance Zero Infinite Low but not zero ANSWER DOWNLOAD EXAMIANS APP
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