Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Semi-conductors Inductors Insulators Conductors Semi-conductors Inductors Insulators Conductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following material has nearly zero temperature co-efficient of resistance? Carbon Porcelain Copper Manganin Carbon Porcelain Copper Manganin 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 Increases Decreases Heater will burn out Remains same Increases Decreases Heater will burn out Remains same ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 25 : 4 5 : 2 2 : 5 4 : 25 25 : 4 5 : 2 2 : 5 4 : 25 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Temperature coefficient of resistance is expressed in terms of ohms/°C mhos/ohm°C mhos/°C ohms/ohm°C ohms/°C mhos/ohm°C mhos/°C ohms/ohm°C ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The SI unit of power is Coulomb Watt Henry Watt-hour Coulomb Watt Henry Watt-hour ANSWER DOWNLOAD EXAMIANS APP
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