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प्रश्न
Which metal is used to make the filament of an electric bulb?
उत्तर
Tungsten metal is used to make the filament of an electric bulb.
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संबंधित प्रश्न
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(b) How much energy is transferred to the heater each second?
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The heat produced in a wire of resistance 'x' when a current 'y' flows through it in time 'z' is given by:
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(b) x × z × y2
(c) y × z2 × x
(d) y × z × x
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Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
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Find the odd one out and give its explanation.
What is the heating effect of electric current?
How can overloading be avoided?
Mark the correct choice
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Reason: The resistance of a conductor depends on length, thickness, nature of material and temperature of the conductor.
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(i) the heating effect of current is used and
(ii) the magnetic effect of current is used.
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An electric fuse is a wire made up of a material having ______ melting point.
The electric fuse works on the Joule heating principle.
In the electric equipment producing heat like iron, electric heater, boiler, toaster etc., an alloy such as nichrome is used, not pure metals.
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State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.
The graph of voltage vs current for four different materials is shown below.
Which of these four materials would be used for making filament of bulb?
