Current Electricity Which of the following materials has the least resistivity ? Zinc Mercury Copper Lead Zinc Mercury Copper Lead ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a material always decreases if Temperature of material is increased Number of free electrons available becomes more None of these Temperature of material is decreased Temperature of material is increased Number of free electrons available becomes more None of these Temperature of material is decreased ANSWER DOWNLOAD EXAMIANS APP
Current Electricity When one lag of parallel circuit is opened out the total current will None of the listed here Decreases Become zero Increases None of the listed here Decreases Become zero Increases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a tungsten lamp _____ as applied voltage increases. Decreases Remains same Increases None of the listed here Decreases Remains same Increases None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has High melting point Low specific resistance Negligibly small temperature co-efficient of resistance High specific resistance High melting point Low specific resistance Negligibly small temperature co-efficient of resistance High specific resistance 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
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