Current Electricity In the case of direct current Magnitude of current remains constant Magnitude and direction of current remains constant Magnitude and direction of current changes with time Magnitude of current changes with time Magnitude of current remains constant Magnitude and direction of current remains constant Magnitude and direction of current changes with time Magnitude of current changes with time ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of conductor varies inversely as Resistivity Area of cross-section Length Temperature Resistivity Area of cross-section Length Temperature 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
Current Electricity The flow of current in solids is due to Electrons Atoms Electrons and ions Nucleus Electrons Atoms Electrons and ions Nucleus ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a material always decreases if 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 Temperature of material is decreased None of these ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ohm's law is not applicable to Vaccum tubes Carbon resistors High voltage circuits Circuits with low current densities Vaccum tubes Carbon resistors High voltage circuits Circuits with low current densities ANSWER DOWNLOAD EXAMIANS APP
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