Current Electricity A copper wire has a resistance of 10 Ω. It is stretched by one-tenth of its original length. Then its resistance will be 9 Ω 10 Ω 11 Ω 12.1 Ω 9 Ω 10 Ω 11 Ω 12.1 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Voltage dependent resistors are usually made from Graphite Nichrome Silicon carbide Charcoal Graphite Nichrome Silicon carbide Charcoal ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following quantities remain the same in all parts of a series circuit? Resistance Power Current Voltage Resistance Power Current Voltage ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a carbon filament lamp _______ as the applied voltage increases. Remains same None of the listed here Decreases Increases Remains same None of the listed here Decreases Increases 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 Negative Positive Zero About 2 ohms per degree Negative Positive Zero About 2 ohms per degree ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? True component of power Losses Input power kWh consumed True component of power Losses Input power kWh consumed ANSWER DOWNLOAD EXAMIANS APP
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