Current Electricity Resistance of a material always decreases if Temperature of material is decreased None of these Number of free electrons available becomes more Temperature of material is increased Temperature of material is decreased None of these Number of free electrons available becomes more Temperature of material is increased ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which method can be used for absolute measurement of resistances? Wheastone bridge method Ohm's law method Lorentz method Releigh method Wheastone bridge method Ohm's law method Lorentz method Releigh method ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The example of non-ohmic resistance is tungsten wire Copper wire Aluminium wire Carbon resistance tungsten wire Copper wire Aluminium wire Carbon resistance 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 None of these Length of heating element should be increased Length of heating element should be decreased Length of heating element has no effect on heating if water None of these Length of heating element should be increased Length of heating element should be decreased Length of heating element has no effect on heating if water ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? True component of power kWh consumed Losses Input power True component of power kWh consumed Losses Input power ANSWER DOWNLOAD EXAMIANS APP
Current Electricity International ohm is defined in terms of the resistance of A cube of copper The unit length of wire A column of mercury A cube of carbon A cube of copper The unit length of wire A column of mercury A cube of carbon ANSWER DOWNLOAD EXAMIANS APP
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