Current Electricity With rise in temperature the resistance of pure metals First increases and then decreases Remains constant Decreases Increases First increases and then decreases Remains constant Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is 5 kWh 6 kWh 2 kWh 3.2 kWh 5 kWh 6 kWh 2 kWh 3.2 kWh 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 Heater will burn out Increases Remains same Decreases Heater will burn out Increases Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Conductance is reciprocal of Capacitance Resistance Inductance Reluctance Capacitance Resistance Inductance Reluctance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity At 0 K, germanium behaves as An insulator A ferromagnetic substance A superconductor A conductor An insulator A ferromagnetic substance A superconductor A conductor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Positive About 2 ohms per degree Negative Zero Positive About 2 ohms per degree Negative Zero ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS