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JEE Main 2002 Physics question

PhysicsCurrent ElectricityJEE Main 2002

A wire when connected to 220 V mains supply has power dissipation . Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is Then is

Answer: (2)

Solution

Initially . Each half has resistance ; two halves in parallel give . Then $ =

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Question ID VK-037883