Which of the following is the most likely temperature fo the filament of an electric light bulb when it is working on the normal 220 V supply line?
(a) $500^{0} C$
(b) $1500^{0} C$
(c) $2500^{0} C$
(d) $4500^{0} C$

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Which of the following is the most likely temperature fo the filament of an electric light bulb when it is working on the normal 220 V supply line?(a) 5000C (b) 15000C (c) 25000C (d) 45000C