Current Electricity Semiconductors have _______temperature co-efficient of resistance. Zero Negative Positive None of the listed here Zero Negative Positive None of the listed here 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 Remains same Heater will burn out Decreases Increases Remains same Heater will burn out Decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 0.8 ohm 0.4 ohm 1.0 ohm 0.6 ohm 0.8 ohm 0.4 ohm 1.0 ohm 0.6 ohm ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which method can be used for absolute measurement of resistances? Releigh method Ohm's law method Wheastone bridge method Lorentz method Releigh method Ohm's law method Wheastone bridge method Lorentz method ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a carbon filament lamp _______ as the applied voltage increases. None of the listed here Decreases Remains same Increases None of the listed here Decreases Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals 20 W 40 W 60 W 10 W 20 W 40 W 60 W 10 W ANSWER DOWNLOAD EXAMIANS APP
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