Current Electricity The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is 1.5 0.5 1 0.6 1.5 0.5 1 0.6 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The current in the circuit having constant resistance is tripled. The power increases 9 times 3 times 1/3 times 1/9 times 9 times 3 times 1/3 times 1/9 times 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 150 V 50 V 100 V 200 V 150 V 50 V 100 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Temperature coefficient of resistance is expressed in terms of mhos/ohm°C ohms/ohm°C ohms/°C mhos/°C mhos/ohm°C ohms/ohm°C ohms/°C mhos/°C ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will Remains same Increases Heater will burn out Decreases Remains same Increases Heater will burn out Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following materials has the least resistivity ? Copper Lead Mercury Zinc Copper Lead Mercury Zinc ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS