Current Electricity The resistance of a conductor varies inversely as Resistivity Are of cross-section Length Temperature Resistivity Are 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? Losses kWh consumed Input power True component of power Losses kWh consumed Input power True component of power ANSWER DOWNLOAD EXAMIANS APP
Current Electricity What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω? 200 V 100 V 50 V 150 V 200 V 100 V 50 V 150 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following materials has the least resistivity ? Lead Zinc Copper Mercury Lead Zinc Copper Mercury ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If an electric current is passed through a nerve, the man Begins to laugh Is excited Becomes insensitive to pain Begins to weep Begins to laugh Is excited Becomes insensitive to pain Begins to weep ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ohm's law is not applicable to Vaccum tubes Circuits with low current densities Carbon resistors High voltage circuits Vaccum tubes Circuits with low current densities Carbon resistors High voltage circuits ANSWER DOWNLOAD EXAMIANS APP
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