Advertisements
Advertisements
प्रश्न
Write an expression for the amount of heat produced in a resistor when an electric current is passed through it stating the meanings of the symbols used.
Advertisements
उत्तर
When an electric current I passes through the conductor, the amount of heat produced in time t is:
H = VIt
Since, V = IR
So, H = I2Rt
APPEARS IN
संबंधित प्रश्न
Explain why, tungsten is used for making the filaments of electric bulbs.
Name the material which is used for making the filaments of an electric bulb.
The elements of electrical heating devices are usually made of:
(a) tungsten
(b) bronze
(c) nichrome
(d) argon
Which of the following characteristic is not suitable for a fuse wire?
(a) thin and short
(b) thick and short
(c) low melting point
(d) higher resistance than rest of wiring
A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of:
An electric component used as a safety device is electric circuit is ______.
What are the uses of electromagnets?
What is an electric fuse made up of?
It would cost a man Rs. 3.50 to buy 1.0 kW h of electrical energy from the Main Electricity Board. His generator has a maximum power of 2.0 kW. The generator produces energy at this maximum power for 3 hours. Calculate how much it would cost to buy the same amount of energy from the Main Electricity Board.
Name a few appliances which work on the basis of the heating effect of current.
