Current Electricity With rise in temperature the resistance of pure metals Remains constant First increases and then decreases Decreases Increases Remains constant First increases and then decreases Decreases Increases 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% None of the listed here 0.4% 0.3% 0.2% None of the listed here 0.4% 0.3% ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following is the best conductor of electricity? Gold Silver Zinc Copper Gold Silver Zinc Copper 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 Positive Negative Zero About 2 ohms per degree Positive Negative Zero About 2 ohms per degree ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Voltage dependent resistors are usually made from Charcoal Graphite Silicon carbide Nichrome Charcoal Graphite Silicon carbide Nichrome ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will Increases Heater will burn out Remains same Decreases Increases Heater will burn out Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
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