Tag: heating effect of electric current- uses
Questions Related to heating effect of electric current- uses
Two equal resistance when connected in series to a battery, consume electri power of 60 w. If these resistnce are now connected in parallel combination to the same battery the electric power consumed will be
The formula used to calculate the heat produced in a conductor is
Commonly used heating element are made of:
Why filament of electric bulb is made of tungsten
The operating temperature of the filament of lamp is ${ 2000 }^{ 0 }C$. The temperature coefficient of the material of filament is ${ 0.005 }^{ 0 }{ C }^{ -1 }$. If the atmospheric temperature is ${ { 0 }^{ 0 }C }$, then the current in the 100W-200W lamp when it is switched on is nearest to
The heating element in an electric iron is made up of :
An electric iron is based upon the principle of
The overheating of electrical wiring in any circuit due to the flow of large current through it is called _________ of the electric circuit.
Electrical welding works on principle of:
Which of the following equipment does not work on principle of Joule's law?
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