the resistance of a silver wire at 0 degree celsius is 1.25 ohm.upto wat temp. it must b heated so dat its resistance is doubled?(alpha silver=0.00375/degree celsius.will d temp. be same for all silver conductors of all shapes??
1. which combination of four identical capacitors (of all possible combinations) has maximum capa
citance? if these combinations are connected to a constant P.d., which combination store minimum energy?
2. can negative ions be accelerated using Van de Graaff generator? why?
3. On which principle ink jet printing and xerox copying machine works?
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