Current Electricity In which of the following substances the resistance decreases with increase in temperature? Constantan Silver Carbon Copper Constantan Silver Carbon Copper ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a few meters of wire conductor in closed electrical circuit is High Very high Low Practically zero High Very high Low Practically zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The SI unit of power is Coulomb Henry Watt-hour Watt Coulomb Henry Watt-hour Watt 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 increased Length of heating element has no effect on heating if water Length of heating element should be decreased None of these Length of heating element should be increased Length of heating element has no effect on heating if water Length of heating element should be decreased None of these ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals Increases Remains constant First increases and then decreases Decreases Increases Remains constant First increases and then decreases Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The minimum charge on an ion is Equal to the charge of the number of electrons in an atom (#) zero None of these Equal to the atomic number of the atom Equal to the charge of an electron Equal to the charge of the number of electrons in an atom (#) zero None of these Equal to the atomic number of the atom Equal to the charge of an electron ANSWER DOWNLOAD EXAMIANS APP
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