Current Electricity Which of the following materials has the least resistivity ? Copper Zinc Lead Mercury Copper Zinc Lead Mercury ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The specific resistance of a metallic conductor ______ with rise in temperature. Increases None of the listed here Decreases Remains unchanged Increases None of the listed here Decreases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Semi-conductors Insulators Inductors Conductors Semi-conductors Insulators Inductors Conductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open Rest of the two bulbs will not light The other two bulbs will light There will be heavy current in the main line All three bulbs will light Rest of the two bulbs will not light The other two bulbs will light There will be heavy current in the main line All three bulbs will light ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following is the best material for making connecting wires? Constant Nichrome Manganin Copper Constant Nichrome Manganin Copper ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The filament of electrical bulb is made of Aluminium Steel Nickel Tungsten Aluminium Steel Nickel Tungsten ANSWER DOWNLOAD EXAMIANS APP
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