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Which Electric Heating Device in Your Home Do You Think Have Resistors Which Control the Flow of Electricity? - Science

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प्रश्न

Which electric heating device in your home do you think have resistors which control the flow of electricity?

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उत्तर

The following electric heating devices have resistors to control the flow of electricity:

Electric iron

Electric geyser

Electric oven

Electric heater

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अध्याय 1: Electricity - Exercise 8

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लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 1 Electricity
Exercise 8 | Q 35

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संबंधित प्रश्न

An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater. 

(b) How much energy is transferred to the heater each second?


Why are the coils of electric irons and electric toasters made of an alloy rather than a pure metal?


Why is a series arrangement not used for connecting domestic electrical appliances in a circuit?


Derive the expression for the heat produced due to a current 'I' flowing for a time interval 't' through a resistor 'R' having a potential difference 'V' across its ends. With which name is this relation known?


The current passing through a room heater has been halved. What will happen to the heat produced by it?


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


Give a scientific reason.

Tungsten metal is used to make a solenoid type coil in an electric bulb.


Give Scientific reason.

In practice, the unit kWh is used for the measurement of electrical energy, rather than joule.


Identify the figure and give its use.


Give scientific reason :
In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster, etc., an alloy such as Nichrome is used, not pure metals.


A coil of an alloy _______ is used in electric heater cooker as a resistor.


Find the odd one out and give its explanation.


Write scientific reason.

A coil made up of alloy Nichrome is used in the electric heater cooker as a resistor.


True or False – If False give the correct answer

The fuse wire does not melts whenever there is overload in the wiring.


An electric kettle consumes 1 kW of electric power when operated at 220 V. A fuse wire of what rating must be used for it?


______ wire is used in the filament of the bulbs.


Copper wire offers very little ______ and does not get heated up quickly.


Fuse is a strip of alloy wire which is made up of lead and tin with a very low ______.


Name a few appliances which work on the basis of the heating effect of current.


Find the odd one out.


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