Current Electricity Which of the following materials has the least resistivity ? Mercury Lead Copper Zinc Mercury Lead Copper Zinc ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct? 40 W lamp will fuse 100 W lamp will glow brighter 40 W lamp will glow brighter Both lamps will glow equally bright 40 W lamp will fuse 100 W lamp will glow brighter 40 W lamp will glow brighter Both lamps will glow equally bright ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The maximum current rating for a 10 kΩ, 0.5 W resistor is 7.07 mA 0.707 mA 28.28 mA 14.14 mA 7.07 mA 0.707 mA 28.28 mA 14.14 mA ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Conductivity is the reciprocal of Current density None of the listed here Resistance Resistivity Current density None of the listed here Resistance Resistivity ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the number of valence electrons of an atoms is less than 4,the substance is usually A semiconductor A conductor An insulator None of the listed here A semiconductor A conductor An insulator None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ohm's law is not applicable to Vaccum tubes High voltage circuits Carbon resistors Circuits with low current densities Vaccum tubes High voltage circuits Carbon resistors Circuits with low current densities ANSWER DOWNLOAD EXAMIANS APP
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