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Question

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

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Solution

It's because tungsten has a high melting point, high resistivity. As current passes through the coil of blub, the coil gets heated up and glow. it's cheaper and also good conductor of heat and electricity which probably helps in glowing of light.

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Q. Why is tungsten used for making filaments in an electric bulb?

Q. Give Scientific reasons.
a. Tungsten metal is used to make a solenoid type coil in an electric bulb.
b. In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster etc, an alloy such as Nichrome is used, not pure metals.
c. For electric power transmission, copper or aluminium wire is used.
d. In practice the unit kWh is used for the measurement of electrical energy, rather than joule.

Tungsten metal is used for making the filaments of electrical bulbs because:

Explain why, tungsten is used for making the filaments of electric bulbs.

Q. Tungsten is used in electric bulbs because:

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