Current Electricity Insulators have _______ temperature co-efficient of resistance. None of the listed here Zero Negative Positive None of the listed here Zero Negative Positive ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a tungsten lamp _____ as applied voltage increases. Decreases Remains same None of the listed here Increases Decreases Remains same None of the listed here Increases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes, using same supply mains Length of heating element should be decreased Length of heating element should be increased Length of heating element has no effect on heating if water None of these Length of heating element should be decreased Length of heating element should be increased Length of heating element has no effect on heating if water None of these ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of two wires is 25 Ω when connected in series and 6 Ω when joined in parallel. The resistance of each wire is 20 Ω, 30 Ω 5 Ω, 10 Ω 10 Ω, 20 Ω 10 Ω, 15 Ω 20 Ω, 30 Ω 5 Ω, 10 Ω 10 Ω, 20 Ω 10 Ω, 15 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is 800 Ω 1000 Ω 400 Ω 600 Ω 800 Ω 1000 Ω 400 Ω 600 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following is the best conductor of electricity? Copper Zinc Gold Silver Copper Zinc Gold Silver ANSWER DOWNLOAD EXAMIANS APP
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