Advertisements
Advertisements
प्रश्न
What is nichrome? State its one use.
Advertisements
उत्तर
Nichrome is an alloy of nickel, chromium, manganese and iron. It is used to make the heating elements of electrical appliances because it has a high resistance and a high melting point.
APPEARS IN
संबंधित प्रश्न
Why does the cord of an electric heater not glow while the heating element does?
Write Joule's law of heating.
Why are the coils of electric irons and electric toasters made of an alloy rather than a pure metal?
Write down the formula for the heat produced when a current I is passed through a resistor R for time t.
Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.
What is meant by the heating effect of current? Give two applications of the heating effect of current.
Which electric heating device in your home do you think have resistors which control the flow of electricity?
Give a scientific reason.
Tungsten metal is used to make a solenoid type coil in an electric bulb.
Why does tungsten metal used to make solenoid type coil in an electric bulb?
The electricity bill specifies the usage in _______.
These days when current in the circuit suddenly increases _______ switches are used.
Explain the importance/uses of fuse wire.
How can overloading be avoided?
Explain the application of heating effect of electric current in an electric bulb with a diagram.
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?
An electric cell produces electricity from the ______ ______ in it.
An electric fuse is a wire made up of a material having ______ melting point.
Find the odd one out.
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.
State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.
