Current Electricity With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals 20 W 10 W 60 W 40 W 20 W 10 W 60 W 40 W ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has High specific resistance Negligibly small temperature co-efficient of resistance High melting point Low specific resistance High specific resistance Negligibly small temperature co-efficient of resistance High melting point Low specific resistance 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? 50 V 150 V 100 V 200 V 50 V 150 V 100 V 200 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ampere-hour is the unit of Strength of current Quantity of electricity Power Energy Strength of current Quantity of electricity Power Energy ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is 0.5 1 0.6 1.5 0.5 1 0.6 1.5 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 About 2 ohms per degree Positive Zero Negative About 2 ohms per degree Positive Zero Negative ANSWER DOWNLOAD EXAMIANS APP
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