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Satkriti Roao State and explain Joule’s law of heating. (b) A resistance of 40 ohms and one of 60 ohms are arranged in series across 220 volt supply.

By Satkriti Roao 8 hours ago  |  Last Post: 8 hours ago

Electricity
 
Satkriti Roao State three factors on which the heat produced by an electric current depends. How does it depend on these factors?

By Satkriti Roao 8 hours ago  |  Last Post: 8 hours ago

Electricity
 
Satkriti Roao (a) Write down the formula for the heat produced when a current I is passed through a resistor R for time. (b) An electric iron of resistance 20 ohms draws a current of 5 amperes. Calculate the heat produced in 30 seconds.

By Satkriti Roao 8 hours ago  |  Last Post: 8 hours ago

Electricity
 
Satkriti Roao Why does the connecting cord of an electric heater not glow hot while the heating element does?

By Satkriti Roao 8 hours ago  |  Last Post: 8 hours ago

Electricity
 
Satkriti Roao Explain why filament type electric bulbs are not power efficient.

By Satkriti Roao 9 hours ago  |  Last Post: 9 hours ago

Electricity
 
Satkriti Roao Name two gases which are filled in filament type electric light bulbs.

By Satkriti Roao 9 hours ago  |  Last Post: 9 hours ago

Electricity
 
Satkriti Roao Name two devices which work on the heating effect of electric current.

By Satkriti Roao 9 hours ago  |  Last Post: 9 hours ago

Electricity
 
Satkriti Roao Which effect of current is utilised in the working of an electric fuse?

By Satkriti Roao 9 hours ago  |  Last Post: 9 hours ago

Electricity
 
Satkriti Roao Which effect of current is utilised in an electric light bulb?

By Satkriti Roao 9 hours ago  |  Last Post: 9 hours ago

Electricity
 
Satkriti Roao Name two effects produced by electric current.

By Satkriti Roao 9 hours ago  |  Last Post: 9 hours ago

Electricity
 
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