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प्रश्न
An electric cell produces electricity from the __________ ___________ in it.
उत्तर
An electric cell produces electricity from the chemicals stored in it.
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संबंधित प्रश्न
Why is the tungsten used almost exclusively for filament of electric lamps?
An electric kettle rated at 220 V, 2.2 kW, works for 3 hours. Find the energy consumed and the current drawn.
Write down the formula for the heat produced when a current I is passed through a resistor R for time t.
The heat produced by passing an electric current through a fixed resistor is proportional to the square of:
(a) magnitude of resistance of the resistor
(b) temperature of the resistor
(c) magnitude of current
(d) time for which current is passed
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.
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.
An electric fuse has a body made of ceramic and two points for connecting the fuse wire.
Fuse is a strip of alloy wire which is made up of lead and tin with a very low ______.
A student boils water in an electric kettle for 20 minutes. Using the same mains supply he wants to reduce the boiling time of water. To do so should he increase or decrease the length of the heating element? Justify your answer.
State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.
