Current Electricity In which of the following substances the resistance decreases with increase in temperature? Silver Constantan Carbon Copper Silver Constantan Carbon Copper 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 Decrease Remain constant Increase None of these Decrease Remain constant Increase None of these ANSWER DOWNLOAD EXAMIANS APP
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 10 Ω 9 Ω 12.1 Ω 11 Ω 10 Ω 9 Ω 12.1 Ω 11 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Eureka has _______ temperature co-efficient of resistance. Almost zero Negative None of the listed here Positive Almost zero Negative None of the listed here Positive ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a carbon filament lamp _______ as the applied voltage increases. Decreases None of the listed here Remains same Increases Decreases None of the listed here Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Semiconductors have _______temperature co-efficient of resistance. Zero Negative Positive None of the listed here Zero Negative Positive None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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