Current Electricity A rheostat differs from potentiometer in the respect that it Has large number of turns Has lower wattage rating Has higher wattage rating Offers large number of tapping Has large number of turns Has lower wattage rating Has higher wattage rating Offers large number of tapping ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators. Thermistor Variable resistors Varistors Semiconductors Thermistor Variable resistors Varistors Semiconductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The insulation on a current carrying conductor is provided To prevent shock Both of the listed here None of above factors To prevent leakage of current To prevent shock Both of the listed here None of above factors To prevent leakage of current ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a carbon filament lamp _______ as the applied voltage increases. None of the listed here Remains same Decreases Increases None of the listed here Remains same Decreases 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 10 W 40 W 60 W 20 W 10 W 40 W 60 W ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following is the best conductor of electricity? Zinc Gold Silver Copper Zinc Gold Silver Copper ANSWER DOWNLOAD EXAMIANS APP
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