A carbon filament has resistance of 120Omega at0^(@)C what must be the resistance of a copper filament connected in series with carbon so that combi-nation has same resistance at all temperatures(alpha_(carbon)=5 xx 10^(-4)//^(0)C, alpha_(copper)=4 xx 10^(-3)//^(0)C)

A carbon filament has resistance of 120Omega at0^(@)C what must be the

1.	A carbon filament has resistance of 120Omega at0^(@)C what must be the resistance of a copper filament connected in series with carbon so that combi-nation has same resistance at all temperatures(alpha_(carbon)=5 xx 10^(-4)//^(0)C, alpha_(copper)=4 xx 10^(-3)//^(0)C)
Answer» `120 OMEGA` `150 Omega` `60 Omega` `210 Omega` ANSWER :B

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A carbon filament has resistance of 120Omega at0^(@)C what must be the resistance of a copper filament connected in series with carbon so that combi-nation has same resistance at all temperatures(alpha_(carbon)=5 xx 10^(-4)//^(0)C, alpha_(copper)=4 xx 10^(-3)//^(0)C)

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