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0 votes1 answer289 views4 Years Ago
A Heater Of 220 V Heats A Volume Of Water In 5 Min. The Same Heater When Connected To 110 V Heats The Same Volume Of Water In (min)
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An Electric Heater Rated 220 V And 550 W Is Connected To AC Mains. The Current Drawn By It Is
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A Piece Of Copper And Another Of Germanium Are Cooled From Room Temperature To 80 Degree K. The Resistance Of
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The Temperature Of Cold Junction Of Thermocouple Is 0 Degree C. If The Neutral Temperature Is 270 Degree C, Then The Inversion Temperature Is
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An Aluminium (resistivity P = 2.2 * 10^-8 M) Wire Of A Diameter 1.4 Mm Is Used To Make A 4 Resistor. The Length Of The Wire Is
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In Which Of The Following Substances Does Resistance Decrease With Increase In Temperature?
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The Resistance Of A Wire Is 5 At 50 Degree C And 6 At 100 Degree C. The Resistance Of The Wire At 0 Degree C Will Be
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The Electron Dirft Speed Is Small And The Charge Of The Electron Is Also Small But Still, We Obtain Large Current In A Conductor. This Is Due To
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The Resistance Of A Straight Conductor Does Not Depend On Its
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With The Rise Of Temperature The Resistivity Of A Semiconductor
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In The Circuit Shown In Fig The Heat Produced In The 5 Ohm Resistor Due To The Current Flowing Through It Is 10 Calories Per Second.
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Resistance Of A Wire At 20 Degree C Is 20 And At 500 Degree C Is 60 . At What Temperature Its Resistance Is 25 ?
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The Amount Of Charge Q Passed In Time T Through A Cross-section Of A Wire Is Q = 5t^2 + 3t + 1. The Value Of Current At Time T = 5 S Is
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